I was trying to install DraftSight and It was showing some error. So to solve that error I installed the following two packages using this command
sudo apt-get install ia32-libs libglib2.0-dev
After this my panel started showing old kind UI. You can compare between two images.
Before

And after

So I removed the above packages immediately (replaced install with remove in the above command) and rebooted. After rebooting the there were no panel and titlebars to windows. So I reinstalled compiz using the below command
sudo apt-get --reinstall install compiz
and rebooted. The title bar and panel appeared after that. But still it was showing the old GUI. I tried removing libglib2.0-0:i386 package as I saw two versions of libglib package But still not effect. Please help
I am using Elementary OS (12.04) 64bit
Thanks