I updated 3 of my sites to 3.1.4 and now they do not work. The 2 that are still on 3.1.3 are fine however.
On one the update hung and timed out, and this is the problem I am getting with many functions since then, requests hang for up to 10 minutes and then time out.
I downloaded 3.1.4, uploaded everything except for the wp-content folder, reverted to the TwentyTen theme etc. The only plugin I have active right now is Akismet, to prevent dozens of spam comments from being left.
I have debug on, and can't see any debug statements on the screen, however my host (POWWEB) cgi error log is showing the following:
PHP Warning: Unknown: open(/var/php_sessions/sess_e4508d865501b6179887f297dc53528e, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
I have no idea what is causing this. Any help would be much appreciated.