UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support Need HELP with SQL Error

I ran the "REPAIR TABLE w3t_Category" command but it didn't help. Here's the error message - any help, please !!! Thanks.

SQL ERROR: Unable to do_query: SELECT DISTINCT Cat_Title,Cat_Number,Cat_Description FROM w3t_Category WHERE Cat_Type =

'forum' ORDER BY Cat_Number
Can't create/write to file '/u0/mysql/tmp3/#sql_376f_0.MYD' (Errcode: 17)
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /usr/www/users/packlite/forums/mysql.inc.php on line 133


thanks again,
packlite

MySQL version 4.1.15