Hi geeks,
I have a issue with my redhat linux mail server,Daily it freezes out with a message on console
Kernel Panic:.......
Then I lose N/w Connection and it is jus line a server Hang up situation...

It is a Redhat 8.0.Qmail 1.03 Mail server with Disk Size..
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 32G 6.0G 24G 20% /
/dev/sda1 197M 9.3M 178M 5% /boot
none 630M 0 629M 0% /dev/shm
/dev/sdb1 67G 45G 18G 71% /dailybackup

[root@xxxl root]# uname -a
Linux xxxl 2.4.18-14 #1 Wed Sep 4 13:35:50 EDT 2002 i686 i686 i386 GNU/Linux

Below are Dmesg logs:
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Linux version 2.4.18-14 (bhcompile@stripples.devel.redhat.com) (gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7)) #1 Wed Sep 4 13:35:50 EDT 2002
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009f800 (usable)
BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000004fffa000 (usable)
BIOS-e820: 000000004fffa000 - 0000000050000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
BIOS-e820: 00000000ffc00000 - 0000000100000000 (reserved)
383MB HIGHMEM available.
896MB LOWMEM available.
On node 0 totalpages: 327674
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 98298 pages.
Kernel command line: ro root=LABEL=/
Initializing CPU#0
Detected 2399.397 MHz processor.
Speakup v-1.00 CVS: Tue Jun 11 14:22:53 EDT 2002 : initialized
Console: colour VGA+ 80x25
Calibrating delay loop... 4767.06 BogoMIPS
Memory: 1284900k/1310696k available (1326k kernel code, 21184k reserved, 999k data, 212k init, 393192k highmem)
Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
Inode cache hash table entries: 131072 (order: 8, 1048576 bytes)
Mount cache hash table entries: 32768 (order: 6, 262144 bytes)
ramfs: mounted with options: <defaults>
ramfs: max_pages=161140 max_file_pages=0 max_inodes=0 max_dentries=161140
Buffer cache hash table entries: 131072 (order: 7, 524288 bytes)
Page-cache hash table entries: 524288 (order: 9, 2097152 bytes)
CPU: Before vendor init, caps: bfebfbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 0K, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: After vendor init, caps: bfebfbff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After generic, caps: bfebfbff 00000000 00000000 00000000
CPU: Common caps: bfebfbff 00000000 00000000 00000000
CPU: Intel(R) Xeon(TM) CPU 2.40GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf0094, last bus=0
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Device 00:00 not found by BIOS
PCI: Device 00:01 not found by BIOS
PCI: Device 00:78 not found by BIOS
PCI: Device 00:7b not found by BIOS
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
speakup: initialized device: /dev/synth, node (MAJOR 10, MINOR 25)
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS not found.
Starting kswapd
allocated 64 pages and 64 bhs reserved for the highmem bounces
VFS: Diskquotas version dquot_6.5.0 initialized
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS0 at 0x03f8 (irq = 4) is a 16550A
Real Time Clock Driver v1.10e
oprofile: can't get RTC I/O Ports
block: 1024 slots per queue, batch=256
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PCI_IDE: unknown IDE controller on PCI bus 00 device 70, VID=1166, DID=0217
PCI_IDE: chipset revision 160
PCI_IDE: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0x2000-0x2007, BIOS settings: hdaio, hdbio
PCI_IDE: simplex device: DMA disabled
ide1: PCI_IDE Bus-Master DMA disabled (BIOS)
hda: LTN486S, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide-floppy driver 0.99.newide
Floppy drive(s): fd0 is 1.44M
floppy0: Floppy io-port 0x03f2 in use
NET4: Frame Diverter 0.46
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
ide-floppy driver 0.99.newide
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 16384 buckets, 128Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 252k freed
VFS: Mounted root (ext2 filesystem).
SCSI subsystem driver Revision: 1.00
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8
<Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=1, 32/253 SCBs

blk: queue c3a23814, I/O limit 4095Mb (mask 0xffffffff)
Vendor: COMPAQ Model: BD03695A27 Rev: HPB4
Type: Direct-Access ANSI SCSI revision: 03
blk: queue c3a23a14, I/O limit 4095Mb (mask 0xffffffff)
Vendor: COMPAQ Model: BD07296B44 Rev: HPB6
Type: Direct-Access ANSI SCSI revision: 03
blk: queue f7fb7214, I/O limit 4095Mb (mask 0xffffffff)
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
scsi0:A:4:0: Tagged Queuing enabled. Depth 253
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi disk sdb at scsi0, channel 0, id 4, lun 0
(scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
SCSI device sda: 71132000 512-byte hdwr sectors (36420 MB)
Partition check:
sda: sda1 sda2 sda3
(scsi0:A:4): 160.000MB/s transfers (80.000MHz DT, offset 127, 16bit)
SCSI device sdb: 142264000 512-byte hdwr sectors (72839 MB)
sdb: sdb1
Journalled Block Device driver loaded
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
kjournald starting. Commit interval 5 seconds
EXT3-fs: sd(8,3): orphan cleanup on readonly fs
ext3_orphan_cleanup: deleting unreferenced inode 3424390
ext3_orphan_cleanup: deleting unreferenced inode 3424389
ext3_orphan_cleanup: deleting unreferenced inode 3424388
ext3_orphan_cleanup: deleting unreferenced inode 3424387
ext3_orphan_cleanup: deleting unreferenced inode 3424386
ext3_orphan_cleanup: deleting unreferenced inode 3424385
ext3_orphan_cleanup: deleting unreferenced inode 3424384
ext3_orphan_cleanup: deleting unreferenced inode 3424383
ext3_orphan_cleanup: deleting unreferenced inode 3424382
ext3_orphan_cleanup: deleting unreferenced inode 3424381
ext3_orphan_cleanup: deleting unreferenced inode 3424380
ext3_orphan_cleanup: deleting unreferenced inode 3424379
ext3_orphan_cleanup: deleting unreferenced inode 3424378
ext3_orphan_cleanup: deleting unreferenced inode 3424377
ext3_orphan_cleanup: deleting unreferenced inode 3424366
ext3_orphan_cleanup: deleting unreferenced inode 3424365
ext3_orphan_cleanup: deleting unreferenced inode 3424364
ext3_orphan_cleanup: deleting unreferenced inode 3424363
ext3_orphan_cleanup: deleting unreferenced inode 3424362
ext3_orphan_cleanup: deleting unreferenced inode 3424361
ext3_orphan_cleanup: deleting unreferenced inode 3424360
ext3_orphan_cleanup: deleting unreferenced inode 3424359
ext3_orphan_cleanup: deleting unreferenced inode 3424358
ext3_orphan_cleanup: deleting unreferenced inode 3424357
ext3_orphan_cleanup: deleting unreferenced inode 3424356
ext3_orphan_cleanup: deleting unreferenced inode 3424355
ext3_orphan_cleanup: deleting unreferenced inode 3424354
ext3_orphan_cleanup: deleting unreferenced inode 3424353
ext3_orphan_cleanup: deleting unreferenced inode 3424352
ext3_orphan_cleanup: deleting unreferenced inode 3424351
ext3_orphan_cleanup: deleting unreferenced inode 3424350
ext3_orphan_cleanup: deleting unreferenced inode 3424349
ext3_orphan_cleanup: deleting unreferenced inode 3424348
ext3_orphan_cleanup: deleting unreferenced inode 3424347
ext3_orphan_cleanup: deleting unreferenced inode 3424346
ext3_orphan_cleanup: deleting unreferenced inode 3424345
ext3_orphan_cleanup: deleting unreferenced inode 3424344
ext3_orphan_cleanup: deleting unreferenced inode 3424343
ext3_orphan_cleanup: deleting unreferenced inode 3424342
ext3_orphan_cleanup: deleting unreferenced inode 3424341
ext3_orphan_cleanup: deleting unreferenced inode 3424340
ext3_orphan_cleanup: deleting unreferenced inode 3424339
ext3_orphan_cleanup: deleting unreferenced inode 3424338
ext3_orphan_cleanup: deleting unreferenced inode 3424337
ext3_orphan_cleanup: deleting unreferenced inode 3424336
ext3_orphan_cleanup: deleting unreferenced inode 3424335
ext3_orphan_cleanup: deleting unreferenced inode 3424334
ext3_orphan_cleanup: deleting unreferenced inode 3424333
ext3_orphan_cleanup: deleting unreferenced inode 3424332
EXT3-fs: sd(8,3): 49 orphan inodes deleted
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
Freeing unused kernel memory: 212k freed
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-ohci.c: USB OHCI at membase 0xf888f000, IRQ 11
usb-ohci.c: usb-00:0f.2, ServerWorks CSB6 OHCI USB Controller
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 4 ports detected
usb.c: registered new driver hiddev
usb.c: registered new driver hid
hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech@suse.cz>
hid-core.c: USB HID support drivers
mice: PS/2 mouse device common for all mice
EXT3 FS 2.4-0.9.18, 14 May 2002 on sd(8,3), internal journal
Adding Swap: 1052248k swap-space (priority -1)
kjournald starting. Commit interval 5 seconds
EXT3 FS 2.4-0.9.18, 14 May 2002 on sd(8,1), internal journal
EXT3-fs: mounted filesystem with ordered data mode.
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
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Is it Scsi issue or do I need to upgrade the server.
I did Googling but reported error was with kernel 2.6 for most of them..So I am not sure whether I need to Upgrade a kernel or Scsi

Pls let me know..
Thanks..