PHP has encountered a Access violation at 02c9a0f0, how to fix it

PHP appears PHP has encountered an Access violation at 02c9a0f0
This issue occurs after a Web site is submitted to the form now

My environment is windows+php PHP version is: PHP versions 5.2.5

After submitting the form, the program does the following, 1, verifies that the form information is canonical, and 2,soap calls the external program to verify the customer insurance information.

This problem does not occur frequently, and it can be refreshed several times when it appears. But what is this problem, on the website to say what PHP eaccelerator problem, I php.ini there is no this

Also say is the session path problem, this impossible ah, I landed in the background is no problem, and the submission form alone is not the session

Also say is c:/winnt/temp authority problem, I put this environment variable because of security problem, put in actually folder, and give access to permissions.

Also said memory is not enough, this is not likely, my server is 8G memory and is a new station not many people visit ah

And it says the limits are set in the application pool. I've removed the restrictions.

Very depressed, please master solution, paste copy of the will, thank you

------Solution--------------------
Have you ever installed a different version of PHP?

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