database query syntax error has occurred. This may indicate a bug in the software. The last attempted database query was: (SQL query hidden) from within function "MediaWikiBagOStuff:_doquery". MySQL returned error "145: Table './qhimm_wiki/objectcache' is marked as crashed and should be repaired (localhost)".
I spoke of it in IRC and then God showed up (Qhimm) and duly fixed it.