Nice unbiased article on ZDNet regarding a recent posting to a Mozilla dev newsgroup from the director of the Microsoft Open Source Labs. The letter was in regards to the Mozilla team utilizing the Microsoft Open Source Lab for testing and working on builds of Mozilla for Windows Vista. If you haven't already seen the Open Source Lab's blog, you should check it out as well. I recently attended a presentation from the guys who run the lab and it was quite impressive.
Link to Microsoft offers helping hand to Firefox | Tech News on ZDNet