That's nothing to do with the fixes I gave you its something new. Check server error logs

You have suhosin or mod_security on your server and that is the issue.

Thank you for the info, Lynne. I'll contact my host and see if something can be done about that. I'm only so so knowledge wise about all that kind of stuff.

--------------- Added [DATE]1392475864[/DATE] at [TIME]1392475864[/TIME] ---------------

Hmmmm, I admin another vB forum4.2.2 site (of course it's on a different server than the site I'm having trouble with but same host, same plan) and that site doesn't have these issues at all. So MUST be an eeeevullll server issue.

Still having these issues, host says it's not server it's vB.
It's really weird, if I make a 'test test test' post it goes thru.
If I try a copy/paste to post a reply, or even when that fails straight type a post longer than one sentence I get the white page error
If I try to edit an existing post I get the white page error
The 'error' email notices I've gotten are as follows:
This is very frustrating.

ETA: This happens using Firefox, Opera, Chrome, SeaMonkey, IE, and Safarie browsers (all most recent/up to date versions)

Check your includes/config.php file and make sure that you've entered the correct MySQL connect information (database name, username and password)

Yes that is correct in the includes/config.php file
and yes, that database user has full priviledges for the database

If that is correct, i.e. you entered the correct credentials into conrig.php, then it is another issue with your setup. Nothing vB can do about it - it just tries to connect to the database the usual way.

For more information, see http://dev.mysql.com/doc/refman/5.6/...to-server.html

So, after PREVIOUSLY asking host tech support if suhosin or mod_security is on my server they ignored the question. NOW when I asked again they come back asking me if I want them to disable mod_security for my site. DOHHHHH idiots. Will see what happens now =S

That's typical for quite a few hosts.

Just an update: Host finally removed mod_security and completed raid rebuild on MySQL. That seems to have solved all my problems (at least so far =S)
Why don't hosts *listen* to their customers to begin with????

Because that is what they get paid to do, to not listen. :)