Strangle problem with WP-ADMIN Login

Hi Guys,

I am facing a strange problem. When i try to login into admin area, the dashboard is not opening instead the browser shows loading (long time and doesn’t recovers).

At the same time, once this loading is happening i am able to directly access the other pages say (options.php or edit.php and able to do any thing)…

I believe login is successful and not getting redirect to dashboard because i am able to access other pages directly. There are no problems with logout.

What could be the issue ?

My recent change: upgraded the hosting plan !

Thanks for your time.