On one PC, a fully up to date HPTablet running Vista Home premium:
I can log in to see my email etc in OWA
When I try and compose a new message:;
- the cursor flickers in the message body, characters enter in reverse
order in the message body;
- I cannot type in the To, CC or Subject fields for 15 - 30 seconds,
sometimes longer. Then the flickering stops, and I can address the message,
and properly type in the message body.

There is no problem when I reply.
--
Neil Wagner