Yes a lot of people have this problem and I don't know what's the reason for it, it always has worked fine for me on both IE and Mozilla.
Try searching the forums to see if you can find any answers.
Anyone come up with any answers yet? I have also the same problem (my config: jboss3.2.3 prod, IE6 and j2sdk1.4.1_02). I have checked the forums but not found anything interesting.