Using bluetooth headset causes OSX to freeze regularly

I'm having problems using my Bluetooth Plantronics P590 headset. It causes OSX to become unstable. I've been using it for 2 days, and had about 4 crashes (OSX locking up) during that time. When I use the headset, lots of times my bluetooth Mighty Mouse becomes jittery (annoying but not more than that, and solvable by turning the mouse off and on). However, sometimes it just completely freezes my machine (the screen turns grey and a message appears in several languages saying I need to restart my computer by holding the power button). The last log sent to Apple looks like this:

Tue May 20 09:09:06 2008
panic(cpu 0 caller 0x00137755): "stack_alloc: kernel memoryallocate"@/SourceCache/xnu/xnu-1228.4.31/osfmk/kern/stack.c:137
Backtrace, Format - Frame : Return Address (4 potential args on stack)
0xfdbd7ea8 : 0x12b0f7 (0x4581f4 0xfdbd7edc 0x133230 0x0)
0xfdbd7ef8 : 0x137755 (0x4593d0 0xfdbd7f2c 0x6000 0x3fff)
0xfdbd7f38 : 0x13ca3f (0x170e85d0 0x0 0x0 0x53b934)
0xfdbd7f68 : 0x13cab5 (0x13eb4d 0x0 0x5e 0xfdbd7f8c)
0xfdbd7f98 : 0x13e1b8 (0x13eb4d 0x0 0x5e 0xfdbd7fbc)
0xfdbd7fc8 : 0x19eadc (0x0 0x0 0x1a20b5 0x12af5998)
Backtrace terminated-invalid frame pointer 0

BSD process name corresponding to current thread: kernel_task

Mac OS version:
9C7010

Kernel version:
Darwin Kernel Version 9.2.2: Tue Mar 4 21:17:34 PST 2008; root:xnu-1228.4.31~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F42388C8)
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When using the headset in combination with Skype, there are outgoing audio troubles (see http://forum.skype.com/index.php?showtopic=137331). I do feel though that that is a Skype problem, because I can record audio fine using Audacity. I just thought I'd mention it here as it might be important.

So basically the problem seems to be that using the bluetooth headset compromises the stability of OSX. I am using two more bluetooth devices (Mighty Mouse + wireless Apple keyboard).

I am now using my USB headset again and things work as expected, lockups do not appear anymore so it really seems to be related to the bluetooth headset.

Any ideas would be greatly appreciated!