Our add to cart wasn't working for a few hours this morning and really wasn't sure what was going on. Looking into the error logging file shows this error:

[28-Apr-2010 05:18:12] PHP Warning: filemtime() [<a href='function.filemtime'>function.filemtime</a>]: stat failed for /DELETED/DELETED/public_html/cache/FILENAME.sql in /DELETED/DELTED/public_html/includes/classes/cache.php on line 59


Line 59 reads:
PHP Code:
if (filemtime(DIR_FS_SQL_CACHE . '/' . $zp_cache_name . '.sql') > (time() - $zf_cachetime)) { 
Not exactly sure what caused this but it was a show stopper since our customer couldn't add to cart. The screen just hangs.

I rebooted mysql server and everything is working fine again. Wanted to post just in case something is obvious that might be wrong with line 59.

Thanks!