...I'm a recruiter and am on multiple sites and it seems each has their own
HTML editor. Anyway, doesn't matter if I'm on one of these sites or in a
webmail email account, when I start composing the email, it seems as if there
is a problem after I type about 100 words or so.

I've tried multiple key variations such as - alt-shift-backspace, or
shift-return or shift-return-backspace, etc...but it still happens when I hit
the "shift" key sometimes.
Additionally, it seems like it likes to do this after I've typed about 100
words or so---this causes me to think it might be some sort of auto-save
feature in IE7.

I have turned off Sticky Keys and this only happens when I'm on a website
that has its own HTML editor.  I'm open to the idea that it might be my fat
fingers hitting oddball keys at the same time, but this is a fairly recent
phenomenon and I've never seen this before. I'm using a Dell laptop with
Vista which I just got last week. This is my first exposure to Vista and its
been quite annoying (although I would say my overall impression with Vista
has been positive).

Any suggestions would be most helpful.
Thanks
Joe