a lot of php5-cgi segfault error 6, please help to solve

[kilburn]

php5 segfaulting means that you've found a bug in the combination of php + modules that you use. Have you installed something without apt-get (from source or binary)? I would bet for a faulty eaccelerator or something like that.

Anyway, this is not related to ispcp, but to a bad software combination on your server. If you are really wanting to find the root cause, you'll have to "strace" the php5-cgi process and determine what low level calls are causing the segfault.