I can't comment on the exact error messages, but I'm also having frequent dropouts with a rt61-based Linksys WRT54G card. If the rt2x00 module provided with linux-ubuntu-modules is as old as has been suggested then it's not surprising that people are having problems. Before I switched from Gentoo I was using a recent CVS version of the rt2x00 modules (November) with no problems whatsoever. It would be a great help if the one provided with linux-ubuntu-modules could be updated to a more recent snapshot.
I can't comment on the exact error messages, but I'm also having frequent dropouts with a rt61-based Linksys WRT54G card. If the rt2x00 module provided with linux-ubuntu- modules is as old as has been suggested then it's not surprising that people are having problems. Before I switched from Gentoo I was using a recent CVS version of the rt2x00 modules (November) with no problems whatsoever. It would be a great help if the one provided with linux-ubuntu- modules could be updated to a more recent snapshot.