I have rewritten the online web compiler for AMX Mod X.
The big change is that it now uses AMX Mod X 1.60's compiler. Anyone still running AMX Mod X 1.0x or lower will find that the compiler generates plugins you can't use. If this is your case, use the version that came with your AMX Mod X distribution and compile plugins manually.
The new web compiler also has a new URL:
Downloading plugins from the forums section also uses the new version.
This version has a number of improvements - it now caches scripts properly, deletes old/unused scripts from the database and filesystem, has a better codebase, and displays correct statistics. The old web compiler had many bugs causing the site to run VERY slow whenever someone downloaded or compiled a plugin.
By popular demand I've released the pretty simple source code to the web compiler. You must edit the variables at the top of Compiler.class.php and compiler.config.inc. Please let me know if you discover any odd problems.