After updating to 2011 i've noticed some of the real tracks sound different and not for the better.

Specifically i was just doing a bossa track and wanted to use the Guitar, Electric, Soloist, Bossa 140 and when it was playing it was almost as if there was some kind of filter effect on it, very subtle but it just didn't sound like it did before. I've noticed the same thing with some of the saxophone real tracks too.
With the saxophones it almost sounds as if there are two different sounds playing at the same time.

I've tried altering the different settings in realtrack preferences but nothing has made a difference.

Anyone else experienced this?