Yeah, it's like that for me, when I look at what I've typed and see a lot of mumbo-jumbo.
And I don't know if it's just me or others get it too.
I can be just typing to someone and all of a sudden, I'm speaking a weird tongue.
The only way out of it is to quit SL and re-log.
All the keys get upset, I can't even use functions like "home".
Wolfie!