oh sheesh.. this is embarrassing :) someone turned on a computer which used to have the same IP as this one, so that's the reason why it had trouble.. When I tried dapper, it was still down.
** Changed in: linux-source-2.6.20 (Ubuntu) Status: Needs Info => Rejected -- broken network with Thinkpad Z61p (Broadcom NetXtreme BCM5752M) https://launchpad.net/bugs/89867 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs