Well, i was thinking about the same thing and yes, the script has many hash tables (heavy tables..)
I was talking about this issue with some decent scripters but most of them didn't agree with me that heavy hash tables may cause this problem (Because i have no binary variables). However, i was kinda sure about it.
I'm know which addon may caused this problem. I have to manage the script again and maybe i have to remove it or totally re-write it.

Thank you for your reply.

Nothing...