I'm running Win7 and have Arduino.exe installed in My Documents ie "My Documents\Arduino\Arduino.exe"
It is currently Version 1.0.1 and I would like to upgrade to 1.0.3.
What is the correct method of performing the upgrade and overwriting of files?
I installed my versions side by side, including beta versions. Then I realized any user created stuff was saved elsewhere, so uninstalling old versions was as easy as deleting folders and shortcuts.
The IDE and its contents are self-contained. So you simply run out of a new folder.
This is why you never put libraries in the "Libraries" folder of the Arduino folder. Instead you put them in your My Documents/Arduino/libraries folder so that upgrades are seamless.