Nokia's firmware changing bluetooth mac address

I own a Nokia X6 16Gb, and the other day, software update remind me that a new version is ready for download.

I download and install it, and after that, I realise that bluetooth's mac address was changed!

Weird but true. The version is 40.0.002, with date 12-10-2011.
Does anyone else has that experience?

Nokia, why is that?

Seriously?

Once upon a time, I had subscribed to Microsoft Office Live to check it out. I didn't use it as a main tool since I found more convenient Google Docs. Anyway, I tried to login from my home computer which it runs Ubuntu 10.04 and Firefox. In my surprise I came up with this message...

To use Microsoft Office Live, your computer must meet one of the following requirements:

* Microsoft Internet Explorer 6, 7, or 8 running on Microsoft Windows XP, Windows Server 2003, or Windows Vista. You can download Internet Explorer from the Internet Explorer page.

* Mozilla Firefox running on Windows XP, Windows Server 2003, Windows Vista, or Mac OS X 10.2.x and later. You can download Firefox from the Firefox download page.

Original page

Come on Microsoft!