Google Webmaster Tools indexed pages dropped to 2

[ichnolite]

Please suggest me some valuable suggestion to get back to normal with my website.
Indexed pages dropped from 360 to 2 within a week in Google Webmaster Tools.
Traffic dropped to 0 along with indexed pages.

[marybur]

Hello,

I have the some problem. I think that my server could be down or overloaded.

[frank]

Maybe you have been hit by any algorithm. Or, maybe your urls are changed that's why your pages got deindexed.

[ChetanModi]

Is it new features of Google webmaster tools, thanks for getting results.