tail /var/log/messages reveals the following:

sda:SCSI error : <5 0 0 0> return code = 0x8000002
Current sda: sense key No Sense
end_request: I/O eerror, dev sda, sector 39102336
Buffer I/O error on device sda, logical block 39102336
sda:SCSI error : <5 0 0 0> return code = 0x8000002
Current sda: sense key No Sense
end_request: I/O eerror, dev sda, sector 39102336
Buffer I/O error on device sda, logical block 39102336
sda1
Attached scsi disk sda aat scsi5, channel 0, id 0, lun 0

I have FC2 (kernel 2.6.x)......would could the problem be?

Any suggestions?

Thank you

Please describe your hardware in detail, or at all for that matter. That will help.

Attached scsi disk sda aat scsi5, channel 0, id 0, lun 0

Try mounting it at sda1 to your mount directory, i.e.,
mount /dev/sda1 /mnt/pendrive

Hey guys sorry i forgot to repost....

I solved the problem by fdisk`ing in Linux to ext3....orginally i'd fdisk`ed ifrom DOs to Fat32.

After the change I've gotten no problems.

Thank you