1114 Error. Please help

[ru55ian]

This morning i woke up and noticed that my board is producing MySQL error 1114

Database error in vBulletin 3.6.8:

Invalid SQL:

INSERT IGNORE INTO session
(sessionhash, userid, host, idhash, lastactivity, location, styleid, languageid, loggedin, inforum, inthread, incalendar, badlocation, useragent, bypass, profileupdate)
VALUES
('615c575cb84e6c9e6abd79e150241c39', 1, '74.102.242.248', '9291daa73ad13eaa857368bd08a9be21', 1189175635, '/', 0, 0, 1, 0, 0, 0, 0, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; InfoPath.2; .NET CLR 1.1.4322)', 0, 0);

MySQL Error : The table 'session' is full
Error Number : 1114
Date : Friday, September 7th 2007 @ 07:33:56 AM

Can anyone tell me how to fix this?

Thanks in advance