I believe this is a bug in vbulletin

[monotreme]

I have a pretty virgin BB install with no load on it. I have my own mysql server and it works fine for everybody. This is a query error and it's not because of anything I hacked on. I have been screwing around strictly on the outside, with cookies and what not, and I have been externally deleting vbulletin's cookies. I'm rather frequently getting a database error. When I repeat the same thing it always clears up so it's no biggie. But perhaps vb should not be generating invalid SQL because a cookie was not where they expected it. Here's the notification I get:

Database error in vBulletin 3.5.0:

Invalid SQL:

SELECT *
FROM vb_session
WHERE userid = 0
AND host = 'xx.xxx.xxx.xxx'
AND idhash = '40fa72da473f960ef3027051150a9db8'
LIMIT 1;

MySQL Error : Record has changed since last read in table 'vb_session'
Error Number : 1020
Date : Wednesday, November 23rd 2005 @ 10:25:36 AM
Script : http://xxx.xxxxx.xx/vb/login.php
Referrer :
IP Address : xx.xxx.xxx.xxx
Username :
Classname : vb_database