For your information and planning, Canonical will be updating the software that the forums run on.
As a result the Forum will be unavailable for a short time sometime between Thursday 5 May at 22:00 UTC and Friday 6 May at 6:00 UTC.
If you have a pressing need to have a question answered may we suggest : http://www.ubuntu.com/support
Sorry for any inconvenience this may cause you, however the downtime should be minimal.