check this out:
http://www.vbulletin.com/forum/showt...20#post1311520

FINALLY IM NOT CRAZY !!!!!!!!!!!!!!!!!!!!!!

From Scott MacVicar - Vbulletin Developer

Never got that error. Still quite happy using xcache.

That post btw (by Scott) is two years old, Xcache has been updated since then.

I never got that error either , my issue was when changing a users avatar via admin cp i would have to go threw the paces 3 times or more before it would take , same as editing a forum or adding a new forum , it would take 15 mins before you could use it with out error messages from vbulletin , Vbulletin.com came to my admin cp with full access and returned with a report that they couldnt reproduce my issue , i immediately went to try to edit something and it took 15 mins before the changes were visible i did not report back to vb.com at that time

also we went threw and manually removed over 500 emails from user accounts that returned as undeliverable , to our surprise weeks later we went to look and all of them returned thats hours or wasted time and resources , which directly converts to $$$ LOST ,

again we manually processed the emails and only 200/500 took , it took us 3 more times before we was successful at removing the 500 ignoramus emails .

with 20-30 new members a day an no requirement to verify email accounts , every mass email turns up undeliverable mail , we let these build and build because our method of removal was hit and miss , the day i switched back to APC we manually processed about 100 emails all of them took first try

No smoke and mirrors here

Sorry, but I dont see how any php cache has any bearing on the sending of e-mails.

not sending of emails

removing undeliverable email addresses from members profiles

APC still kicking butt !!!

As is Xcache ;)

We need to stage an php accelerator showdown

Sunday Sunday Sunday ...

2 MATCHING SERVERS
1 with Xcache
1 with APC

and 1 php file

ITS ON !!!

:D

(of course you will have to hit go 2 or 3 times on the Xcache to get it to execute by that time APC is hanging out with xcache's girlfriend at the local cafe drinking a Dr. Pepper with 2 straws)

Never had a problem with xcache.

Like Paul said it has been updated some. Version 1.2.2 works great.