R50e, odd keyboard problem, possibly at stuck key?

[AdamYoung]

Hi,

Recently i've had a really odd problem that occurs every now and then whist i'm typing.

I will be typing and the right click menu will appear, or the text that i'm writing will be highlighted and subsequently overtyped.
Also occassionally when I intentionally right click, such as to save a picture from the web, the app windows that were in the background come to the foreground (this may last up to 10 clicks).

I've tried blowing the keyboard with air and removing the left and right click buttons to make sure everythings clean.

Anyone got any ideas? It's driving me mad!

Thanks for your help