AppDB problem

[Segin]

While changing user prefences, I got this error:

Database Error!
Query: REPLACE session_list VALUES ('0b7b7e6e2b25056088b212db53619c9c', 
'', '', 
'current|O:4:"user":7:{s:7:"iUserId";s:5:"72211";s:6:"sEmail";s:17:"[e-mail]";s:9:"sRealname";s:0:"";s:6:"sStamp";s:14:"20051229230938";s:12:"sDateCreated";s:19:"2005-07-09 
01:45:14";s:12:"sWineRelease";s:8:"20050524";s:17:"bInactivityWarned";N;}', 
'', NOW())
Deadlock found when trying to get lock; Try restarting transaction

Just thought this was worth reporting.