Re: BuddyPress Showoff: Post your links
The IE and avatar issues are known and fixes are in progress. There’s no timetable but as soon as the problems are resolved the fixes will be rolled out.
As a fix for the improper titles (“Nothing found for…” etc.) I highly recommend installing the All in One SEO Pack Plugin. Besides being the best SEO plugin for WordPress imo, it will also take care of those titles, replacing them with the title of your choosing. I use my site title, for example.
Finally, the bbPress dual-login issue is a WPMU and bbPress cookie issue, not an issue with BuddyPress. I’ve found it’s easiest to just have users login a second time rather than mess with the cookies until the bbPress component is added to BuddyPress and bbPress 1.0 is finalized.