Originally Posted by John Clark
You can delete it but keep in mind that it's not a quick download to reinstall. It has to be reinstalled using the OS installation package for your BB and desktop manager. If you don't use it for chatting with other BB users then, by all means, delete it.
As I said above, when I upgraded to the new OS, I chose not to install BB Messenger (what was I thinking??
). When I decided to install it, I used the application loader and it was easy -- no problem at all since I had the new OS installed to my PC.