Wireless speed drops

[Georgi Hristozov]

Hi,

I'm having an odd problem with Fedora 10. I'm using the x86 version 
(fully updated) on Toshiba Satellite A200. My network card is Intel 
3945ABG and I'm using 802.11g with WPA.

After a few minutes with this maximum speed of my home network 
(20-23MBps), it suddenly drops to values around 1MBps and doesn't 
increase again, no matter what I try. The only solution is to restart 
Network Manager. After deactivating NM and trying wicd, the problem 
persisted. And I was able to solve it by restarting wicd, like the case 
with NM. Some people from the Bulgarian LUG suggested that it's from 
iwl3945, because they have similar issues. But they don't have a 
solution yet. Unfortunately, I don't see anything suspicious in the 
logs. I tried updating the system, but it didn't help. Using some koji 
packages, including 2.6.29, led to the same result.

Any ideas how can I debug this issue? It isn't a big pain in my everyday 
use, but gets pretty annoying when I'm downloading something big. Any 
help will be appreciated. Thanks in advance!