I tried changing my domain's php mode to 5.3.xFastCGI since that's what's recommended in the wikis to reduce memory usage. Except now I get an Internal Server Error and can't even log in to the admin panel on Wordpress. I changed back to mod_php 5.2.x and my permissions seem all screwed up. I can't install plugins or even upload photos without changing the permissions to 777. I still haven't managed to get either WP Super Cache or W3 Total Cache to install properly. Though I do already have Xcache active, so do I need a cache plugin?
Anybody know why 5.3 won't work for me? (I recently upgraded to a VPS from shared hosting if that makes any difference at all.)
Has changing back to mod_php screwed something else up now too? Should I delete the new .php folder that was created when I tried 5.3?
Any ideas? I'm lost with PHP.