Hi, here is my problem:
only for non admin users:
When I create more than 2 calls (Inbound or outbound ,planned or held) for for one lead ,I can't convert the lead.
I have a blank screen just before my lead has been converted.
Sometimes I can see this error message: Fatal error: Allowed memory size of 509715200 bytes exhausted (tried to allocate 2048 bytes) .

Memory limit in my php.ini is 500MB:

when i log in with admin there is no problem.

Is someone can help me???