Cant install xcache or eaccelerator

[ffeingol]

We had the same issue on another server with just IonCube and Zend. It not not happen all the time or in any consistent manner. Everything is fine for days and then "poof" one site starts to get 503's. The site (that notices it first) is extremely popular so it's not as if the pages are not being accessed.

[mistwang]

If you use suEXEC, you can strace the php process when experiencing the problem.