I found my own solution was the CB Acymailing and/or the CBSubs AcyMailing plugins - I deleted/uninstalled them and I'm fine now.

P.S. I tried installing the CBSubs AcyMailing plug-in again and problem returns.

Thanks krileon

I just changed it so it might crop up again, but before changing CB Configuration Manager > Integration Tab > Enable anti-spoofing sessions checks to No I was not able to login from the front page, but then after changing it to No, I was.

CB 1.4
Joomla 1.6.0
Session Lifetime: 15
Session handler: Database
login using the CB Login module

All I did was change the Anti-Spoofing to NO.. And I was able to login right away.

Not what I want to have. But it worked.

" session expired or cookies are not enabled in your browser. Please press "reload page" in your browser, and enable cookies in your browser. Please refresh/reload page before filling-in. "

I'am also getting this frustrating error ( on registration page, no error with login page ) when site is put for live server (tries in 2 live servers but error persists). This error does not pop up in XAMPP local server.

I tried various solutions but non worked at all.. even i uninstalled, reinstalled again but no success...

" session expired or cookies are not enabled in your browser. Please press "reload page" in your browser, and enable cookies in your browser. Please refresh/reload page before filling-in. "

I'am also getting this frustrating error ( on registration page, no error with login page ) when site is put for live server (tries in 2 live servers but error persists). This error does not pop up in XAMPP local server.

I tried various solutions but non worked at all.. even i uninstalled and reinstalled it again but no success...

Looking for a solution and if doesn't work.. sadly though I will have to go for some other alternative...

When check username with ajax in register, I have same error only in Opera 12.14, not others(chrome, IE).
I have changed the Anti-Spoofing to NO, but it does not help.

CB 1.9
Joomla 2.5.9