Despite the fact that I've seen this bug mentioned four or so times, I thought I'd relay that I am having this same problem, as is a buddy of mine here at work. It seems that on the machines which we did fresh installs (2) we have this problem. On his machine at work, which he updated, he's not having this problem. Could it be the JIT compiler? It seems that if you turn of JIT, netscape doesn't have this problem. 2 more for the netscape bug... Score.
*** This bug has been marked as a duplicate of 2386 ***