I am sorry to see this topic has not been touched in a year, so I hope in reviving it maybe someone can help. I have two users of 8700g's who have intermittent and nonsensical keyboard issues as described except there is no recognizable pattern as to what is keyed and what appears on the screen when typing.
I confirm autotext is turned off. The issue starts and stops for both users seemingly randomly. The one 8700g has experienced water infiltration and has been wiped twice while the other 8700g is brand new as of January 2008.
Your writer, also an 8700g owner and user, has experienced none of this. My two users are
that I can not find a solution let alone an answer and are frustrated at the problem. Thank you for your assistance, and best regards.