I released an update to Suffusion BP Pack. Version 1.11 fixes a rather odd AJAX issue that was preventing BuddyPress tabs from working properly. I have also corrected some minor formatting quirks.
Do give it a try and let me know if other AJAX issues persist.
The only issue I noticed was that the ‘add friend’ button (after being clicked) would shrink down to nothing. It seems to be working perfectly after your update. Thanks Sayontan!