Downloaded Moz FF - nice but

Hey guys, finally decided to download FireFox and see what all the hype is about. I dont normally touch browsers until they’ve been time proven, and as of right now FF is still just being offered as a “preview release”, but hey I had to check it out. Very nice, good loading, gotta love the tabs since I am looking so many pages at a time during the day. However I have been noticing differences in page display… at first it really wasnt anything big, just stuff I noticed on pages I go to alot… now Ive found some things that actually inhibit my ability to navigate certain sites… example: www.di.fm they have a drop menu, that works fine in IE and it works fine in FF - BUT - when it should drop down over the “FEATURES” section you cannot see the nav.

Could some one else check this, I would like to be sure it is not just my system. Also have any of you other FF users experienced problems since most designers/developers are not yet really trying to make their stuff fully FF compatible?

Peace