Hi Charles,
I can't help with any "first hand" experience with the S2 but I thought
you may not have seen this good doc
https://supportforums.cisco.com/docs/DOC-25133
I also did a CSC search (all forums) with the keywords jabber galaxy s2
and did see a few pages of results, so probably some good tips there.
Also, wanted you to try posting in the "Jabber clients" Forum sub-section
if you get a chance.
https://supportforums.cisco.com/community/netpro/collaboration-voice-video/jabber?view=discussions
Cheers!
Rob
"And if I should fall behind
Wait for me" - Springsteen