Version of phpBB3: RC7
Was this a fresh install or a(n) update/upgrade/conversion (please be specific)? update from RC6 (via other RC's)
Was this an install through your host? No
MODs you have installed: None
When the problem started: 8th November
Looked in phpMyAdmin, there is no table 's' ?SQL ERROR [ mysql4 ]
Table 's' is marked as crashed and should be repaired 
An sql error occurred while fetching this page. Please contact an administrator if this problem persists.