I just updated to 1.2.5 and the update itself seemingly went without a hitch, but all transfers between mobile devices and the datasync server have ceased.
I can still see devices connecting in the log file but no e-mail is being delivered. GroupWise is also still delivering messages.

I'm still troubleshooting this at the moment, and about launch an update to SLES11sp2 (currently SP1) to see if that fixes it.

p.s. the new monitor screen is awesome.