[Mediawiki-l] Update.php to 1.11 didn't work?

[Azurite]

After some finagling with my host, I finally figured out how to run the 
maintenance/update.php script from the command line using PHP5 as CGI. 
It seems to run smoothly, but then when I look at the Special:Version 
page (even after clearing my cache), it still says I'm running PHP 
1.10.1. What's going on here? Did the update not take, or do I need to 
manually edit something somewhere?
Also, after an update, what are other good maintenance scripts to run, 
or folders that should be deleted? I keep hearing different things from 
non-Wikimedia sources, so I thought I'd ask here.
-Azurite