Pieik does not works with Firefox, works with IE

Support & Bugs
1

I used to use Piwik for a several webs without problems.
Yesterday I have noticed a problem, when if I go to the page from Firefox, the visit is not recorded, but if I go there (from the same computer at the same time) from Internet Explorer, it is recorded without problem.

Can somebody help me to analyse the problem and solev it?

Tested on:
I use Piwik 1.7.1
Firefox 12.0
IE 8

Thank you for the help.

2

Maybe you put the “exclude my visits with cookies” on your firefox?

3

Thank you for the support, after checking cookies I can see that an old one caused the mentioned.
Best regards