Problems login websites

[Lirin]

I can't login into websites on my iMac
It started with some sites, but today i can't login into every website i tried.
When I put in my information, it takes me right back to the login page. no error, no message, just right back to nothing.
I can't even logging into gmail anymore !!
I know the information is correct, because i tried that on my iPhone and PC.

I've tried several things for now, such as:
- emptying Cookies, than logging off and restarting the computer.
- using different internet browsers such as Mozilla Firefox and Explorer.
- shutting the firewall.

I'm new with a Mac and i'm not good in Compu-talk...
So please if you answer tell m as simple as possible

 

[HiNRG]

Cannot login to some websites with OSX

Same issue. Cannot login to eBay, Garmin Connect and a number of other sites.

Tested with Opera as well so not just a Safari issue so assume something to do with OSX.

Some comments on other sites suggest issues with the internet connection, but that cannot be as I am running Bootcamp and when I boot in Windows and run Safari or IE on Win7 all sites work fine, so this is an Apple OSX cock-up by the looks of it.

Tried re-settign Safari, deleting Cookies, opening up cookie access to 'Always', and still no luck.

I'm keen to try OSX but this amongst other basic flaws sends me back to the Windows which at least does what it says on the tin.

Anyone got a fix for this website login issue?