HELP cursor/typing losing focus and stalling BADLY

has this problem been solved yet? i posted it a month ago and no one has had
any idea - i've installed to a brand new Windows XP installation, first thing
after OS install, and it's ended up doing the same thing:

when i'm typing something new to be sent, my cursor is stalling every
several seconds FOR a few seconds. at times, the whole windows wants to lose
focus, replaced my Outlook's Main App, i think - i have to write a LOT of
emails in a day, and this is quite frustrating.

anyone discovered what's going on with this, yet?

thanks so much, ya'll