I am experiencing this bug, too. The connection seems to be more unstable in my university network than at home. I guess the reason could be that there are multiple accesspoints with the same ESSID - which seems reasonable because of the multiple mac addresses in my dmesg. So I think this should be a bug in network manager.
** Attachment added: "dmesg extract (only parts related to wifi) after the network goes down" https://bugs.launchpad.net/ubuntu/lucid/+source/linux/+bug/525902/+attachment/1612341/+files/dmesg_extract.txt -- [iwlagn] Network card keeps dropping the connection https://bugs.launchpad.net/bugs/525902 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
