2008/7/9 Brion Vibber brion@wikimedia.org:
If your MediaWiki installation is resizing image thumbnails using the internal GD libraries, it's also more likely to hit limits, since the full image gets loaded into PHP-accounted memory. Try installing ImageMagick and switching to it if possible (or just keep the memory limit higher :)
In addition, ImageMagick seems to do nicer thumbnails.
(unspeakably bad for SVGs, though.)
- d.