Binary package hint: thunderbird
When I resume from suspend, network manager quickly re-establishes a WiFi internet connection. With an active connection, I try to check my mail with Thunderbird, but it complains that it can't connect to the IMAP server. This seems to happen after longer suspend periods because if I try to replicate the behaviour by quickly suspending and resuming (suspend of a few seconds), I get no warning.
DistroRelease: Ubuntu 10.04
Package: thunderbird 3.0.4+nobinonly-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 220.127.116.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Date: Sun May 23 12:26:28 2010
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100412)