Okay, I seem to have got it. The issue seems to be with the network settings. If one of the mail/news servers are not accessible, then evolution windows keep freezing at regular interval (USB keyboard or not). I will change the bug summary to reflect this.
** Summary changed: - Evolution freezes (for half a minute) in regular intervals if laptop is running without the USB keyboard + Evolution freezes (for half a minute) in regular intervals if one of the mail/news servers are not accessible over the network -- Evolution freezes (for half a minute) in regular intervals if one of the mail/news servers are not accessible over the network https://bugs.launchpad.net/bugs/157317 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug contact for evolution in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs