gnome runs in snail speed if default gateway for network defined (since kernel 2.6.0)

[Benjamin Henne <metalhen metalhen de>]

Hi.
Don't know whether this list or the kernel list will be the right one.
This is my problem:
Gnome 2.4 works fine on my debian sid/sarge system (Fujitsu Siemens 
Lifebook E7110). With kernel 2.4.20 all works great. Now I installed and 
compiled a 2.6.0 kernel.
There is now the problem. If I start gnome with no network device 
switched on is runs as always seen under 2.4.20. But if I ifconfig up 
one device and set an default route to my gateway gnome slows down to 
snail speed.
If I start gnome is needs > 30min to start. If I setup gateway while 
running gnome it seems alls things work but with time lacks where 
nothing happens of about 2 or 3 minutes.
if I turn off all net devices gnome runs normally again. I only get this 
problem with 2.6.0 kernel.

regards

B.Henne