Comment 47 for bug 197781

sorry for the delay, guys...
It happens both on my old notebook (1.4 Ghz Pentium M, 512MB RAM, 16 MB Intel Graphics card with shared memory), on my new notebook (1.5 Ghz Intel Core 2 Duo, 2 GB RAM, 256 MB intel Graphics card with shared RAM) and on every Virtualbox installation of hardy).
It also happens with and without compiz enabled.
I really don't think this is a graphics-related issue. I think the elements (buttons, text fields, etc) inside the tabs that are not showing are really not loaded (not just not shown due to some graphics glitch).
I tested with firefox3.0RC1 (from hardy main) and the bug still occurs.