It happens sometimes. This time was after the download (at startup) of a new ip-filtering from a url. Sometimes happens few minutes atfer start, other times when assuming a new category tab (don 't know now if same error).
I'm using a cvs build from 20070927 (packman build), in other machine (amd64), it doesn't crash initial (even with ip-filter url), but crashes after too after some large minutes. can try to post the trace too, later.
EDIT: only get a segmentation fault in this last one :/
thanks