Try Clear all cookies and the cache and check it again.

Check Extensions and Plugins also if still have problem.

see also: Cannot log in to websites

thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Here are a few things to check:

1. You only need to click web links once. In the case of http://www.quotestream.com/ and the login link, clicking it once brings up the login form and clicking a second time closes the form. Try just clicking once.
2. If that isn't the issue, try holding down the shift key while reloading the page. Then click the link.
3. If that still doesn't help, it could be that there is an add-on that is interfering. Follow the instructions in Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems to figure out if this is the case.

That problem can be caused by the Yahoo! Toolbar or the Babylon extension that extents too much downwards and covers the top part of the browser window and thus makes links and buttons in that part of the screen not clickable.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode