Gartner means that Firefox has become so popular that they will start attracting more and more viruses and spyware.
So if your reason to switch web browser is security, you should think again.

Well... I kind of agree. Sure there are less viruses directed to Groupwise compared to Exchange. But which mail server would you have most use out of as an end user?!

I think the discussions have gone so far to be secure, that a lot of places are swithing to less popular software, which are less targeted by hackers, that they end up with so crappy software that the end user is getting all forgotten about and ends up in a way less productive environment!

Sometimes you need to accept the most popular software, so the end user gets what he/she wants, and then spend your time/money to make it more secure around it instead of throwing out the software itself...