RaLink 2500 Cardbus/mini-PCI not working

Binary package hint: gnome-nettool

The network manager recognizes the RaLink interface (a network card you insert into a slot) Some wireless networks in my environment are properly detected by it.
It just won't connect to them (kind of enters a fruitless loop)

Using the Synaptec manager I've installed a configuration tool for RT2500, which doesn't detect the card (tells me to check the rt2x00.conf file).

The hardware information tool however lists the card, provides some information (device name or manufacturer) but not all of it (for instance: Status = Status, or Device Type = Unknown,...)

I've installed the rt-2500 source package (for Debian, it says), apparently without errors, but nothing changes.

Thx

ProblemType: Bug
Architecture: i386
Date: Thu Dec 27 21:06:02 2007
DistroRelease: Ubuntu 7.10
ExecutablePath: /usr/bin/gnome-nettool
NonfreeKernelModules: nvidia
Package: gnome-nettool 2.20.0-0ubuntu1
PackageArchitecture: i386
ProcCmdline: gnome-nettool
ProcCwd: /home/unga
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-nettool
Uname: Linux unga-desktop 2.6.22-14-generic #1 SMP Tue Dec 18 08:02:57 UTC 2007 i686 GNU/Linux