[Debian] No wlan device with 2.6.28-20090105.git69b2aa26

[Marcel]

Hello,

I installed kernel 2.6.28-20090105.git69b2aa26 (.28 kernel from Debian repo) 
yesterday. Today, wanting to use the neo as a webradio receiver connected to 
the stereo, I noticed that eth0, the wlan device, is gone. (No it doesn't 
have another name, ifconfig -a only shows up usb0 and lo.)
Trying to check lspci, I got this:

d-a318:~# lspci
pcilib: Cannot open /proc/bus/pci
lspci: Cannot find any working access method.

Eeeh. Wtfomgbbq? :)
I have no idea where to check next, there seems to be really wrong 
with /proc/bus/pci (which comes from where?).
Any hints?

--
Marcel