Hi Saud,
There was no issue that we are aware of. Can you check the following?
* Have you allowed 50 MB isolated storage for this server? you can check this from Windows start menu -> Programs -> Microsoft Silverlight -> Microsoft Silverlight -> Application Storage tab and see if "Enable Application Storage" is checked and 50 MB is shown against your server. If not, you can delete the entry and when you login next time, you will get the prompt again and you can allow.
* Have you cleared your browser cache or used private browsing mode? If yes, then there will be no local history.
Thanks
Chinthan