lsphp issue

[IrPr]

Hi there,

Today i've upgraded one of servers to 4.1RC5 to use AIO support which fixes IO bottleneck and CPU is more utilized after that which is greatly appreciated
All websites now works like a charm and it really boosts!

But after few hours all php processes has been stopped working and processing suddenly and didn't proceed with any php script for minutes
CPU is fully idle and IOWAIT is 0 but no php process is handled

I just found this row in error log:
[notice] EACCELERATOR(17699): PHP crashed on opline 14 of read() at /home/lool/public_html/includes/core/core.cache.php:65

Then switched to XCache instead of EAccelerator, but after few more hours the same problem with php processes occurred without any error

I didn't check with static files if they are proceeded properly or not, but reloading/restarting lsws service fixed the problem
I'm not sure if its whole lshttpd issue or just for lsphp5 processes

For now i'm really confused
Any suggestion is welcome

Regards