Ok, here is what I don't get. I have gone back and forth between V4 and V3 on the 7100t with T-Mobile. When I have ANY of the 4.x.x.x versions installed, people tell me I sound like I'm in a tunnel, or tons of static, or they can't hear me, etc. This isn't on EVERY call, but many of them. When I went back to 3.8, not one complaint. I know people have talked about this audio problem before. I am nearly fed up with RIM for not solving this. How could it NOT be the absolute #1 priority? If you can't make a friggin call from a phone, what good is it? I'm about to go back to 3.8, but of course there are interface issues that are worse on 3 than 4. Does RIM have any plans to fix this? Anyone know?