Default Mail client in Windows keeps getting changed back to Microsoft Outlook

["sjl" <sjl_abc@xxxxxxxxxxx>]

All -

I have been using Windows Live Mail for a while now.

Occasionally, I have noticed (usually while sending a reply to one of the 
Midrange lists from within the built-in newsreader in the Live Mail client) 
that Microsoft Outlook would be loaded for my email reply /instead/ of 
Windows Live Mail.

The last time this happened was a couple of weeks ago.

I noticed this morning that a Microsoft update was applied to my computer 
last night, and it rebooted.

Today, my default mail client (As viewed by opening IE, then 
Tools ->Internet Options -> Programs) was changed back once again to 
Outlook, so now I'm thinking that Microsoft update is doing this behind the 
scenes.

So, I just changed it back to Microsoft Live Mail once again...

Has anyone else experienced such a problem?

- sjl