allowed memory error (php execution problem) on template.php

Hi.

This is weird. I’m trying to upgrade a second WP installation on a server on which a 2.8 installation is already working, but I cannot manage to get over this error –

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /var/www/web[account]/html/[domain_name]/wordpress/wp-admin/includes/template.php on line 1946

On a third installation the error appeared in another file.
Strange: Front end is working, so WP does execute, at least partially.

Any idea how to deal with this? I tried @ini set to 128M in the function throwing the error, but that was really just a “well, why not try” idea. Didn’t work.