I bought an 8GB A100 unit a month ago here in Italy and it is starting this weird behaviour since a week too. I cannot replicate the problem all the times. Sometimes it works perfectly, sometimes it starts clicking like crazy and opening panels and apps all by itself.
When this happened, I tried to light shake it in case of false contacts, but this doesn't seemed to stop the clicking. Also I tried to super clean the surface of the tablet blaming on excessive grease or moist, but got no improvements.
I noticed that this tends to happen more when I switch it on after a walk with the A100 in my coat's pocket, but if I use it when it is on my desk, most of times it works with no problems.
I can't decide if returning the unit or not. A month is passed and returning policies here are not granting users as much as in the US. Expecially if the problem can't be reproduced "on demand".
I don't know what to do.. maybe trying a reset could help, but as I can see from pabdaddy1995, not too much. Let's hope a firmware update can solve this.
Ciao from Claudio