In Mac OS X Lion, I have some good number of Unknown Apps listed in launchpad. I am not sure how they got installed/placed out there.
Can anyone help me remove these icons? I tried searching these files in Finder, but I’m unable to find them.

In Mac OS X Lion, I have some good number of Unknown Apps listed in launchpad. I am not sure how they got installed/placed out there.
Can anyone help me remove these icons? I tried searching these files in Finder, but I’m unable to find them.

Try resetting your launchpad by writing following into terminal window
This will reset your launchpad and you will loose any customizations you did (if any)...