I've been having trouble getting the Facebook Like and Google+1 buttons generated by Sexy Bookmarks 220.127.116.11 appearing on my blog. I've just noticed that there seems to be a conflict with Simple Facebook Connect 0.25. When the Base module is enabled, the Sexy Bookmarks buttons disappear. I've reported this in this thread, and you can see an example on this post on my site.
Any idea why these two plugins might be conflicting?