I'm not sure what's really going on, but I noticed that I also have trouble using the web presence module and IM using FF3.0.6 and Flash 10 under Vista when I have AdBlock Plus enabled. This is true even if I tell it to turn itself off for the site. Seems the only consistent thing is it works if I don't have those 2 add-ons installed. (Google ToolBar and AdBlock Plus)

Will be performing some other research on this issue as time allows.