MacPro Early 2008 Freeze

I'm frustrated from running Parallels on my machine. I formated the HD and did a fresh installation of Leopard 10.5 and then update to 10.5.3. The first time I opened Parallels, it forced to me to create virtual machine. Because I already have virtual machine in another drive, I created dummy one without HD. Now, when I open Parallels, it opens the newly created VM, and when I try to open my old VM from the file menu, it opens a new instance . Now the problem comes. Sometimes, Parallels' icon keeps jumping and the application won't start. More, it freezes and the system is becoming slow. Worse, I cannot kill this instance neither I can force quite the application. The first instance can be closed normally. If I try to restart, The system won't restart because of the Parallels Desktop (not responding).

I checked the console and there are 2 records for the first and second instances of Parallels. Those records are created when I started each instance:

6/20/08 3:28:45 PM [0x0-0x21021].com.parallels.desktop[355] QFSFileEngine:pen: No file name specified


My System:
MacPro 2x2.8 Quad-Core Intel Xeon
10 GB 800MHz Ram
MacPro HD Free Space: 52 GB
Second Drive Free Space: 11 GB
Parallels Version: 5608

At least, I need a way to force quite Parallels rather than shutting down the system.

 

Actually those are QT(not Quick Time) engine debug messages you can ignore them , it is function call in QT instance creation
Parallels Desktop suggest as it didn't detected VMs in usual location
Documents/Parallels
Library/Parallels
/Users/Shared/Parallels

Go to folder where your VM is located and double click VM pvs file, after that Parallels Desktop remembers location and will not provide you with new installation wizard