I confirm this bug for Intel(R) Centrino Duo T2600 @ 2.16GHz. It appears to manifest itself on both kernels (generic and 386).
Stopping the network (/etc/init.d/network) returns system performance back to normal but when the system is reconnected one needs to start it up again. Regards -- very slow edgy when no network https://launchpad.net/bugs/69941 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs