10.3: kernel panic after online update

Hi,
since update from 10.2 to 10.3 I have got a lot of trouble. A view days ago 
after an online update my external usb disk did not work anymore. The only 
solution I found was do install 10.3 anew. After that anything worked without 
problems until the next update to new kernel 2.6.22.12-0.1 -586.

After that update I've got the following message during boot:

EIP (<f0a60f35>) sony_pic_irq+0xfa/0x15a (sony_laptop) SS:ESP 0068:efc85ea0
Kernel panic - not syncing: Fatal exeption in interupt

that was it. The only way to start the laptop again was with Failsafe and to 
go back to the original kernel from the dvd.

Sony laptop: PCG-GRX316G

Rudi