Weird performance issue

[[ Xi0N ]]

I am using the latest version of Virtualbox (1.5.4) in my Ubuntu 7.10 and seems to work fine except for some strange issue that i noticed:
I installed a virtual XP and sometimes, when i start it, in seems to get frozen while booting, so, i move the mouse to check something, and suddenly, like activated by the mouse movement, the machine gets out of that "frozen" state and goes on running.
This goes on after loging into windows. Suddenly, it gets completely frozen again, until i move the mouse again.
this sometimes even freezes my real ubuntu completely, to the point of needing to do a hard reboot of the complete machine!.
This happens sometimes, not allways, i mean, sometimes the machine just works fine, but is quite strange, isn't it?
I wound like to help to fix this, providing logs of the machine or whatever information you ask me to provide you.
Thanks!!

[Yaku]

Hi. I have the same problem with VirtualBox 2.0.2, on Ubuntu Hardy.

When I start a Windows XP virtual machine, the system comes to a complete halt - BOTH the Ubuntu host and WinXP guest. Nothing happens on the screen, nothing happens in general unless I move the mouse. When I stop moving the mouse, everything stops again. So basically the system is unusable until I quit VirtualBox.

This does not happen every time, but more often than not. I did not have this problem with the VirtualBox OSE version available in the Ubuntu Hardy repositories.

Random system details below. Could you XION maybe take a look at these details and check if there is maybe something common with your setup so the cause could be tracked. Should I make a real bug report somewhere?

- VirtualBox: 2.0.2 closed source edition (taken from virtualbox home page)
- Host OS: Ubuntu Hardy Heron 8.04 32bit.
- Host OS kernel: 2.6.24-21-generic (from hardy proposed repositories maybe)
- Guest OS: Windows XP Pro SP2, latest Guest additions installed (virtual machine was created with VirtualBox OSE 1.5, and updated by the current virtualbox installer)
- Machine: Acer Ferrari 4000 laptop (ATI graphics, AMD Turion64 processor) (at boot time there has always been a message like "BIOS bug: Timer not connected to IO-APIC", I wonder if it could have something to do with this)

- Compiz is installed but not in use.
- I have two mouse devices (wireless and wired, both USB)
- Latest EnvyNG ATI proprietary graphics drivers installed
- I have an external LCD screen in clone mode connected via DVI

EDIT: maybe this topic should go to the Linux hosts -area, because this also affects the host system?

EDIT2: just clearing out that sometimes the problem stays even after the virtual machine is stopped, requiring a boot

EDIT3: I created a bug report: http://www.virtualbox.org/ticket/2382