I have been having problems with my host doing what ever it is with modsecurity, either enable or disable, I am still confused.
Basically what ever it is they do is preventing a user from uploading any file, i.e. a profile photo, basic size nothing to big. I have tried many times myself with just thumbnail images and still face it myself.
What is modsecurity and is there a way I can set something in htaccess or php.ini to turn it off/on what ever I need it set to so I can upload.
At present I have to contact the host and ask them to change the setting, but in the mean time the user has gone else where !