engine revs when clutch depressed

[Yaris#2]

I just got my 2010 Yaris 5 door hatchback yesterday. It has a manual transmission and when the clutch is depressed to shift gears, the engine revs about 300 to 500 rpms (this is with my foot completely off the gas pedal). By the time I actually get the gears changed, the rpms drop to the point that letting the clutch out decelerates the car.

Has anyone else experienced this problem? If so, is there an easy fix?
I have been driving manual transmissions for many years so it isn't like I am learning. My previous 2008 Yaris was an automatic, and I noticed that it would maintain speed for a few seconds after my foot was removed from the gas before it started decelerating. I am wondering if this is a common trait of the vehicle?