Debug Certificate expired on [DATETIME] [APPLICATION] Unknown Android Packaging

SCENARIO:

Error occurs upon running android SDK on Eclipse 3.5. Assuming that a lower version of android's SDK was previously installed and tested on the same system.

Actual error I got:

Debug Certificate expired on 9/14/10 2:46 PM Hello World Unknown Android Packaging Problem

FIXED:

This due to expired certificate within the user's directory. To resolve this, kindly remove the said certificate which can be found on:

C:\Documents and Settings\[USER]\.android\

or for Windows 7 and/or Vista

C:\Users\[USER]\.android\

In there remove the file named:

debug.keystore

After that, click Project > Clean to rebuild the application. By following this, the issue should be resolve.

Image from http://android.com