I've got a Linksys WMP54G Pci card of some kind that's being reported as a Ralink rt2500 pci, but it is very slow (50k/s cap) and has jumpy signal strength (goes between 70% and 10% every second or so, while the router is in the same room). It is just this pc, as I'm using my laptop fine right now with no such condition. I am running basically a fresh version of Slackware 12.2, so it's kernel version 2.6.27.7. I have used this with Slackware 13 and there was absolutely no issue, so I think it may be a wrong or outdated driver, but building kernel modules and updating whatever module it should be is not something that I'm very good at.

Any help is greatly appreciated. =)

I've (mostly) fixed it by just adding a connect script to WICD to set the bitrate to 36M. For some reason this chip on this kernel gets stuck at 1M...

I found this trouble description and you "fix" interesting.

Yeah, it's not a very elegant solution, but it seems to work. =/