LinuxQuestions.org - Wifi/acpi problems on sony laptop PCG-R600 after upgrading to slackware-12.0

Hi,
I am having a few problems with my wifi card which seems to become blind after a few secondes after the boot. I can receive a dhcp address but network goes down and scan doesn't give any results (I know I can reach a least ten wifi networks from here !)

The problem is with a sony PCG-R600HMPD Laptop with a wifi Intersil Prism 2.5
Everything worked fine with the slackware-11.0 and sonypi driver

I have upgrade to Slackware-12.0 and encountered problems with my X configuration. So I haden't finished looking at all the new config files. But network worked fine. I finished that when I had my X working again. But broke my wifi network....

I had a rc.network file to run in place of rc.inet1. It was called by rc.M. So I made same changes in new ones but couldn't find anything to do in the rc.network

Here a few lines that I found interesting in /var/log/messages

Code:

sudo:    tonus : TTY=vc/1 ; PWD=/home/tonus ; USER=root ; COMMAND=/etc/rc.d/rc.network switch valw

logger: /etc/rc.d/rc.network: Switch profile to 'valw'

logger: /etc/rc.d/rc.network: Using connection with number '1'.

logger: /etc/rc.d/rc.network: Shutting down interface 'eth0'

logger: /etc/rc.d/rc.network: Making interface 'eth0' down.

logger: WARNING: The script 'rc.wireless' must be executed by 'rc.inet1'!

logger:          You should run the command "/etc/rc.d/rc.inet1 <your_interface>_start" yourself.

logger: /etc/rc.d/rc.network: Processing wireless stuffs on 'eth1'

logger: /etc/rc.d/rc.network: Using DHCP/'eth1'

kernel: ADDRCONF(NETDEV_UP): eth1: link is not ready

kernel: eth1: New link status: Association Failed (0006)

kernel: eth1: New link status: Connected (0001)

kernel: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready

logger: /etc/rc.d/rc.network: Starting DHCP at 'eth1'

kernel: eth1: New link status: AP Out of Range (0004)

kernel: [drm] Initialized drm 1.1.0 20060810

kernel: ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 9 (level,low) -> IRQ 9

kernel: [drm] Initialized i915 1.6.0 20060119 on minor 0

kernel: [drm] Initialized i915 1.6.0 20060119 on minor 1

kernel: eth1: New link status: AP In Range (0005)      #

kernel: eth1: New link status: AP Out of Range (0004)  # All that in 1 seconde

kernel: eth1: New link status: AP In Range (0005)      #

kernel: eth1: New link status: AP Out of Range (0004)  #

So, is it something I missed with changes and hints, something wrong with acpi or something else ?
I am no more sure of anything, even where I could post :/
Thanks for help.