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I added more items to menus as wordpress can handle. I've received following message:

Warning: Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0

I opened up my php.ini and changed it in following way:
;;;;;;;;;;;;;;;;;;;
; Resource Limits ;
;;;;;;;;;;;;;;;;;;;
; How many GET/POST/COOKIE input variables may be accepted
; max_input_vars = Unknown

I've restarted Apache and MySQL but nothing changed. I still get the same message.

I'm a newbie, and I have absolutely no idea how I can solve this problem. Please help.

Thanks
Markus