PaulRB:
Is there any way I can install 1.0.5 over the top of 1.0.1, as though it had been installed with Ubuntu S/W centre?Is there any channel for us to request Canonical to upgrade their repositories?
I have not found a way to install the downloaded version to replace the repository version. I gave it a half-hearted try at first, then realized I wanted all the IDE versions available for testing so I could determine if it was ok to start using a new IDE version.
I did some upgrade stuff for Ubuntu, but it was not worthwhile in the end. The downloaded version from the Arduino site uses all its own gcc compiler and library stuff, so it doesn't require any Ubuntu upgrades to work right out of the box.