This bug started today for what I can understand, and it appears randomly when I try to open a page of the site (manga view, forum, anyone):
Error clearing sessions table
This happens every once in a while when they do a reboot of the server at the exact time somebody is logging on to the forum. If the timing is just right it will cause an corupted entry into the sessions table of the database, since the entry does not get completed properly. The sessions table controls everybody when they logon and inserts information into the cookie it stores in your cache file. This is how the forum knows you have been inactive and logs you out automatically after at set time period.
Unfortunately this means I need to keep an eye on the forum and go into the datbase and correct it when needed. Luckily the sessions table does not contain any vital information for the forum, so no postings or accounts are lost.
This was posted by an admin on another forum. So, anyone getting the same problem or knowing if this info is true?