Incorrect playing speed of midi files (Parallels Desktop 4.0)

I upgraded Parallels Desktop to v4.0 from v2.x.
The guest OS is Windows XP.

After upgrading it, I noticed that the playing speed of midi files got slower than that on v2.

So then I uninstalled Parallels Desktop 4.0, intalled it again to another HDD on OS X, and installed Windows XP from CD as a new virtual machine.

But no improvement.

The attached file is examples of midi files, recorded as MP3 on the virtual machine.
One is recorded on Parallels Desktop 4.0 (slow), and the other is the correct version.

Does anyone have the same problem?

(I'm not an English speaker. Sorry for my poor English.)

--
- MacBook 2GHz Intel Core Duo
- Mac OS X 10.5.5

- Original midi file: 'flourlish.mid' (which is in 'c:\windows\media' on Windows XP)
- Player: Windows Media Player 10
- Midi device: Microsoft GS Wavetable SW Synth

 

Thank you for the report. We will check.