STOP 0x0000007F Unexpected Kernel Mode Trap

I've come across the following BSOD:STOP 0x0000007F (0x00000000, 0x00000000, 0x00000000, 0x00000000)UNEXPECTED_KERNEL_MODE_TRAPThis appears to have started shortly after I installed a network drive. The drive is a Western Digital MyBook Live 1TB.Here's the sequence of events:1) Installed the drive and ran the software from the CD. I only installed the WD SmartWare Drive Manager, NOT the backup software.2) Evaluated and tried out the drive for a couple of days - no issues, everything worked fine.3) Then, Windows Update notified me of 2 updates...which were rather strange...a) HD - Other Hardware - WD MyBook Live - IMPORTANT HD - Other Hardware - Storage Media Update - OPTIONAL (not the exact description, but similar)4) I noticed a yellow bang in Device Manager. It was under other devices, but it was obviously my network drive that I installed. It said that "No Driver could be found for this device." However, my drive was working fine and no issues were noted.5) I installed the 2 Windows Updates and the Yellow bang went away. The device now had a driver and was viewed under the appropriate device category.6) Went to bed, I restarted the computer the next day and within 1 minute of bootup, I get the above BSOD. I rebooted and the same error occured.Things to note:a) The error happens often (about 50% of the time) but not always. However, it always occurs within 1 to 2 minutes after bootup and the error code is exactly the same each time. If I don't get the error after 2 minutes of bootup, I will not get it at all. Safemode & Safemode with Networking do not appear to experience the BSOD.c) When the BSOD occurs, it usually happens when the boot drive (System partition) is very "Busy" (like after a Windows Update, new program install, etc.)d) It references the same file associated with Acronis True Image as the culprit (see below).

.Here's my BlueScreenView analysis:==================================================Dump File : 041311-60809-01.dmpCrash Time : 4/13/2011 7:54:18 AMBug Check String : UNEXPECTED_KERNEL_MODE_TRAPBug Check Code : 0x0000007fParameter 1 : 0x00000000Parameter 2 : 0x00000000Parameter 3 : 0x00000000Parameter 4 : 0x00000000Caused By Driver :

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