I bought a new galaxy tab 7.0 plus 16gb from Best Buy and I'm loving it so far, but I have 2 little problems with it: 1. Whenever I'm using headphones, I hear a faint 'hissing' sound (like white noise from a TV). The headphones are high quality (brainwavz m1 / soundmagic e30) and work fine with other devices, so the tablet seems to be the problem. 2. The tablet gets very hot on the side with the microSD slot. Does anyone else have these problems? Should I try to get a replacement?