If you work in a Corp env and having a Laptop, you will likely go home with it still running and it must has all the network drives still mapped. And then later when you are at home and try to use your Laptop, you will see considerable delay. The Windows Explore and many Windows application that access File Browser dialog will try relentlessly in reconnecting those drives without sucess. This also affect your Cygwin shell too.
Here is a DOS command to remove them all.
C:> net use * /delete /y
If you are in Cygwin bash, then you must quote the '*'.
