I've just upgraded from 1.3.3 and I now have a big reduction in performance. I checked my raw access logs and it seems that for each GET of a page it does a dozens of GET's on title=User:Paul_Sinnett/monobook.css&action... title=User:Paul_Sinnett/monobook.js&action... title=-&action... Is this normal? I don't have any of these pages defined but it takes about 10 seconds to make these attempts.