mod_security forced page reload - ctrl-f5

Hi,

i'e recently turned on mod_security for my domain and one issue stands out is if I do a forced page reload using ctrl-f5.

No matter what browser I use, doing a force reload brings up the following messages:

Forbidden

You don't have permission to access / on this server.

however if I just to a normal page load it's fine.

Is there some known setting on mod_security thats blocks this?

interesting - i've just set Comodo WAF mode and it looks like it's fixed my issue.