I'm getting the zend error all of a sudden...

everything was fine this morning. sites worked fine, until I got a 500 internal server error and then "can not connect" and then my sites all came back on line...all except the vShare sites which are the only ones using zend.

I have phpexsuexe or whatever the hell it is and I can't have php directives in the htaccess...and now all of a sudden I'm getting this Zend error....I'm pretty sure that I have everything correct in the .htacess and php.ini for the phpsuexe thingie....what do we put in the php.ini then? Also, could it be that the php on the server got corrupted during the outage and would cause the zend error to appear on vShare sites?