Sometimes you come across something weird and this was definitely one of those instances.  I honestly don't know what I did to get here but I found myself unable to drag and drop icons.  I attempted to drag an item to the recycle bin but no such luck.

I attempted to install a software package on a server and the installation failed due to an existing application using the desired port.  Since it was a non-standard port, I didn't know what was using the port but I needed to find it and either kill it or move it.

Let's say for example, we're looking for the process living on port 3389 (the remote desktop / terminal services port).  First, we run:

netstat -ano | findstr :3389

The return should present you with several lines.  One of them should look like this:

TCP   192.168.1.100:3389    0.0.0.0    LISTENING    [processid]

Kind of an odd issue.  Ran:

sudo apt-get update

And was presented with:

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise/main/source/Sources  Hash Sum mismatch