Sitemenu module causes White Screen Of Death

Hi,

I'm using the Sitemenu module on several different sites; it's pretty useful and it has some advantages over the similar "Site Map module". However, on one of the sites - the oldes and largest - the module causes problems.

Basically, the Sitemenu module does not generate a Sitemap/Sitemenu, but causes White Screen Of Death. As far as I can see, the Drupal watchdog doesn't record any errors. The site runs on a dedicated serverver, the resource limit in php.ini is currently set to 65M. I'm not sure which other configuration parameters might apply (MySQL config, etc.)

I tried to narrow down the to-display-items, e.g. bei excluding all but two smaller vocabularies in "Omitted vocabularies": Then the module starts to work again, but *only* with the small vocabularies (a few hundres terms). If I omitt anything but my main vocabulary, I also get the WSOD; "Cache the taxonomy tree for performance" is activated, "Number of nodes to show" ist set to 0. There seems to be a limit which the module in connection with the server configuration can't handle. Notably: The modules still works fine on the other smaller Drupal sites running on the same server.

I'm not sure if this is caused by the size of the taxonomy, or the number of nodes, or something else. The fact that the smaller vocabularies *do* work could indicate a problem with the size of the taxonomy - especially with a large taxonomy a sitemap would be helpful, e.g. limited to a smaller set of (main) categories.

Any ideas?

Thanks & greetings, -asb