which is at fault? iceweasel or drupal?

["Russell L. Harris" <rlharris@broadcaster.org>]

Occasionally while browsing with iceweasel, the machine slows to a
crawl and the processor usage (as displayed by system monitor) stays
at 100 percent.  Almost always, this happens when browsing a web site
which uses drupal as its engine.

I have experienced this phenomenon with Etch, Lenny, and Squeeze, and
on various machines.

Because of a previous experience in which drupal appears to have given
vandals access to my web site, I suspect that the culprit is drupal;
but perhaps the combination of iceweasel and drupal has a synergstic
effect for the worse.

RLH