R 1.6.1 segmentation fault

Hi,
We have been running R ver 1.4.1 on a redhat linux (7.1)cluster without
problem for quit some time.
Now, some user wanted me to install version 1.6.1, and it compiled fine,
but it crashes with "segmentation fault" when you run it. I used gcc296
(default) for compiling, Should I change compiler or is there some other
thing I could do to  avoid this problem.

Regards
Per-Anders