First off, all browsers except Chrome should update their flash player by going to this link:

When your game is stuck, first RIGHT CLICK your game screen and click "Clear Cache" if its available and then continue on.

Then, delete your browsers cookies, cache, and your temporary files.

Internet Explorer 9 and 8
Click Tools (or press Alt-x), and select Delete Browsing History... .
Deselect Preserve Favorites website data, and select Temporary Internet files, Cookies.
Click Delete.

Internet Explorer 7

From the Tools menu in the upper right, select Delete Browsing History... .
To delete your cache, click Delete files... .
To delete your cookies, click Delete cookies... .
Click Close, and then click OK to exit.

Firefox 3.5 and above for Windows
From the Tools menu, select Clear Recent History... . Alternatively, in Firefox 4 and above, you can also click the orange Firefox button, and then select Clear Recent History from the History menu.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Click the down arrow next to "Details" to choose what history elements to clear (e.g., check Cookies to clear cookies). Click Clear Now.

Firefox 3 for Windows

From the Tools menu, select Clear Recent History... , and then select the items you want to delete (Cache, Cookies).
Click Clear Recent History... .


In the browser bar, enter:
Select the items you want to clear (Empty the cache, Delete cookies and other site and plug-in data).
From the Obliterate the following items from: drop-down menu, you can choose the period of time for which you want to clear cached information. To clear your entire cache, select the beginning of time.
Click Clear browsing data.

From the Safari menu, select Reset Safari... .
From the menu, select the items you want to reset, and then click Reset. As of Safari 5.1, Remove all website data covers both cookies and cache.

Now reload your browser to and log in as you normally do. You may have to manually reload a few times if it freezes. If you can still not log in, I suggest switching browsers to Chrome if you are not using it already.

If none of these are helping you, please submit a ticket to