When I try to rebuild my site's category pages or individual archives, my browser eventually reports an error:

Safari can’t open the page “http://rchrd.com/mt/mt.cgi?__mode=rebuild&blog_id=1&typ…&entry_id=&is_new=&old_status=&old_previous=&old_next=” because it could not load any data from this location.

The same thing happens with Firefox, but without an error message .. the panel goes blank and the status is Done. I switched to Safari to see if anything different happens.

It is clear that the update to the category pages that I expected only happened to some of the page, not all.

Any hints what the cause could be. As it is, I don't seem to be able to do a complete rebuild of my site. (I'm using MT 3.32)