Windows Server 2003 VM Running Exchange with Random Bluescreening

I have a Microsoft Exchange 2007 server (x64) that was originally on a physical piece of hardware. However we have P2V'd it into a guest on a VMware ESX host and it seems to be running normally except for one little detail: It bluescreens every 15 or 20 days with the following information:

Event Type: Error
Event Source: System Error
Event Category: (102)
Event ID: 1003
Date: 1/31/2008
Time: 8:34:36 AM
User: N/A
Computer: SMTP2
Description:Error code 00000000000000d1, parameter1 0000000000000019, parameter2 0000000000000002, parameter3 0000000000000001, parameter4 fffffadfd99f4e5b.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.Data:0000: 53 79 73 74 65 6d 20 45 System E0008: 72 72 6f 72 20 20 45 72 rror Er0010: 72 6f 72 20 63 6f 64 65 ror code0018: 20 30 30 30 30 30 30 30 00000000020: 30 30 30 30 30 30 30 64 0000000d0028: 31 20 20 50 61 72 61 6d 1 Param0030: 65 74 65 72 73 20 30 30 eters 000038: 30 30 30 30 30 30 30 30 000000000040: 30 30 30 30 31 39 2c 20 000019, 0048: 30 30 30 30 30 30 30 30 000000000050: 30 30 30 30 30 30 30 32 000000020058: 2c 20 30 30 30 30 30 30 , 0000000060: 30 30 30 30 30 30 30 30 000000000068: 30 31 2c 20 66 66 66 66 01, ffff0070: 66 61 64 66 64 39 39 66 fadfd99f0078: 34 65 35 62 4e5b

It seems fairly random and there is not a whole lot to go on as far as troubleshooting... I found a MS patch (kb950772) that is supposed to fix "A computer that is running an x64-based version of Windows Server 2003... randomly restarts and then generates a Stop Error" After applying the patch the box seems stable and has yet to throw a stop error.

Patch Details at: http://support.microsoft.com/kb/950772