I am upgrading to Novell Messenger 2.2 from GroupWise Messenger 2.0.2 and have few questions. Most importantly, do my clients also have to upgraded? I know they do if they want the added functionality of the new 2.2 features, but if they don't want it, will the older 2.0.2 - 2.0.4 clients still connect and work with no problems?

Secondly, would I be better off installing SLES (our servers are all SLES) 10SP4 instead of SLES 11 SP1 since I see there are some documented issues with SLES11 (auto-update not working - in particular)?