Thread:Project:Support desk/"CACHE ACCEL requested but no suitable object cache is present."

Hi, My wiki is on a VPS on dreamhost and has xcache enabled. Today after logging in, it asked me to upgrade my php to 5.3 (which was long overdue on dreamhost). Anyway, after doing that I went to my wiki and I noticed I got a message: CACHE_ACCEL requested but no suitable object cache is present. You may want to install APC.

Backtrace:


 * 1) 0 [internal function]: ObjectCache::newAccelerator(Array)
 * 2) 1 /home/kingkwon/koreanwikiproject.com/wiki/includes/objectcache/ObjectCache.php(62): call_user_func('ObjectCache::ne...', Array)
 * 3) 2 /home/kingkwon/koreanwikiproject.com/wiki/includes/objectcache/ObjectCache.php(50): ObjectCache::newFromParams(Array)
 * 4) 3 /home/kingkwon/koreanwikiproject.com/wiki/includes/objectcache/ObjectCache.php(23): ObjectCache::newFromId(3)
 * 5) 4 /home/kingkwon/koreanwikiproject.com/wiki/includes/GlobalFunctions.php(3816): ObjectCache::getInstance(3)
 * 6) 5 /home/kingkwon/koreanwikiproject.com/wiki/includes/Setup.php(439): wfGetMainCache
 * 7) 6 /home/kingkwon/koreanwikiproject.com/wiki/includes/WebStart.php(157): require_once('/home/kingkwon/...')
 * 8) 7 /home/kingkwon/koreanwikiproject.com/wiki/index.php(54): require('/home/kingkwon/...')
 * 9) 8 {main}

I don't know if upgrading the php broke it, or if it was broken beforehand. I've tried changing the php back to 5.2 and tried 5.4 as well and no luck so far. I have no idea how to proceed. Any help would be appreciated. Thanks