I'll test! This is the module I've been working on that prevented me from testing your image gallery extension. :-) I'll do some Q/A tonight.
Some initial bug findings:
Dates and Times tab -> The times always save with a date of 1/13/2009 (today's date), could be confusing to people, even though I understand only the time portion is used on the front-end.
Dates and Times tab -> Blank entry is also created during save/publish. Not a big deal, but again, could be confusing to people.
The advanced calendar I see has a category (type). Would it be possible in the site tree to branch out the types? I'd imagine it would be an easy extension I could do myself, just curious your thoughts. More importantly, could the types be manageable through the admin interface, or only hard-coded? (This is one 'feature' of SS I'm still trying to implement properly without requiring a whole separate admin top nav element).
I'll play with it more tomorrow, I couldn't really get much else to break.