Search is not working

[Migrated From Jforum.net]

I have installed JForum in my machine (using win2000 ,weblogic8.1,MySQL)
using english(US) langauge......
i m not able to search .....some times it give no result found page and some times it gives following error

"An error has occurred.

For detailed error information, please see the HTML source code, and contact the forum Administrator.

Data truncation: Data truncated for column 'session_id' at row 2"

Can any one help me out???

[originally posted on jforum.net by ptiwari]