Since last few days, on my Windows 8 Laptop, I am getting the following screen after I try to Login to Facebook account:

It shows the link “https://www.facebook.com/login.php?login_attempt=1” on the URL and displays a blank white page. The login_attempt parameter shows value 1. To solve this problem, I just reload (refresh) the page using F5 key. Once reloaded, it shows the home page properly.
I primarily use Firefox to access Social Networking websites. Based on my initial analysis, the above Facebook login issue started since Firefox got updated from version 18.0.1 to 18.0.2.

As assumed it to be a Firefox bug. I even tried the following to troubleshoot:
- Cleared up Cache in Firefox and restarted the browser
- Reset the Internet Connection
- Even tried this from my another Desktop PC.
- Changed DNS Servers to Google DNS (8.8.8.8, 4.4.4.4)
Nothing from above options, helped me to resolve the problem in Firefox. As issue kept repeating for few days, I experimented other browsers to login to Facebook.
Surprisingly, both Internet Explorer and Chrome showed up similar problem, but in a different way. The F5 (refresh/reload) command once again came to my resume in other browsers. Below is the screenshots from IE 10, which shows HTTP 500 Internal Server Error:

And, here is the screenshot from Google Chrome browser, which shows HTTP Error 500 (Internal Server Error):

If you are saving your login password (remember password feature) in browser, then you may not get into this mess. The above issue appears only for those who always manually type password to login. I hope most of the users who are facing this problem are able to login using F5 (refresh) command.
Update (10-Feb-2013): Without making any changes to my settings, today the Facebook Login page is working perfectly. It looks like the Facebook team has fixed this bug silently
I tried in all browsers, and the login works perfectly. I hope it is working well for others too.