SMP broken in VB 3.0

[nbi]

Windows XP 32 bit guest with 4 CPUs eventually crashes. There are no messages in /var/log/messages to indicate what the problem might be. If the guest is reconfigured for 1 CPU the problem goes away. HW is an Asus P6T Deluxe with i7 920. Virtualization is enabled in motherboard BIOS. OS is Debian Lenny 64 bit.

[nbi]

Additional observations: XP is choppy, especially audio before crash occurs.

Tried a few additional things without success:

1. Reduced number of guest CPUs to 2 (from 4). No benefit.
2. Used 'taskset' to bind vbox session to 2 specific CPUs to reduce scheduler's CPU switching. No benefit.

[Frank Mehnert]

Should be fixed or at least notably improved with 3.0.2.