I am running the Featured Content Gallery v.3.2.0 plug-in by iePlexus on WP MU v.2.8.4a.
I have activated a theme that requires the plug-in (StudioPress Agent 3.0 theme). Right now, I am not getting anything to show up. See for yourself at 2muchagg.
I have put in requests at the plug-in support forum, as well as the theme support forum, but figured that I'd throw this up here too, in case one of you brilliant WP MU developers could help.
FYI, I have disabled all WP plug-ins as well as all MU plug-ins, to no avail.
I have also tried different themes, also with no luck. I am seriously considering installing WordPress MU version 2.7.1 - because the plug-in site claims compatibility up to version 2.7.1.