BB Curve :: Email Content Duplicates Itself?

I have a very annoying and weird problem with my Blackberry.I got my new Curve 9360 last week and set up my 2 hotmail emails on it. I used to have an old Curve before and used the same emails on it. When I started using the emails I realised that whenever I reply from my Blackberry device the email content duplicates itself so the person on the other end receives the original content*2. So for example if I reply with word "test" and message will arrive as "testtest". Would you know how to fix it? I have tried everything - removed and added back my email accounts, wiped all the data and installed everything back again, deleted my blackberry ID and created a new one and even exchanged the blackberry device itself.