WLAN problem in Knoppix 6.1 on Eee PC 4G (701)

Hi!

I just tried K6.1 (c't edition) on an Eee PC 4G (701). Works fine, except for this WLAN problem:
After connecting, I get the full DSL speed (~2000kbps, e.g. when doing $ apt-get update), but only for a short while! The connection speed breaks down, and comes up again sometimes, but only to break down again.

Does anyone have the same problem? Or does anyone uses K6.1 on a 701 without this problem?

Is there a way to configure WLAN for a better performance? I'd like to get rid of the old Xandros system, where WLAN works very stable.

Ciao, Narag.