i dont understand why suhosin created lots of problem with php sites ..After installing none of my sites i.e vb ,ipb forum are not able to login to their admin area..even i am not able to login to my whmcs when i try to login it just take me to same login page even after entering the correct login and password ,it dont take me to admin area...So wht you think the problem is ..is it related to server cache??
No. it's related to suhosin itself. If you use your server only for your own sites you can tune suhosin settings. But, if offer shared hosting don't st your time and just remove suhosin.
To tune suhosin you need tail /var/log/messages
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