Nero multisession after SP1

[Ney]

Hi!

First of all, I have Windows XP, a HP 8100 CD-R drive (master of the 2nd IDE channel - with DMA on) and Asus A7 Pro motherboard.

I don't really know if it started to happen after I installed Windows XP's sp1, but now every time I try to continue a multisession CD-R in Nero there's a buffer underrun and some other errors when it begins. Only recording of blank CD-Rs work now.

Here's some info from the log:

1:25:34 AM #18 CDR -1013 File Writer.cpp, Line 335
Buffer underrun

1:25:34 AM #19 Text 0 File ThreadedTransfer.cpp, Line 222
all writers idle, stopping conversion

1:25:34 AM #20 Text 0 File ThreadedTransfer.cpp, Line 216
conversion idle, stopping reader

1:25:34 AM #21 CDR -201 File WriterStatus.cpp, Line 188
Invalid write state

1:25:34 AM #22 TRANSFER -18 File WriterStatus.cpp, Line 188
Could not perform EndTrack

1:25:36 AM #23 Phase 38 File dlgbrnst.cpp, Line 1566
Burn process failed at 4x (600 KB/s)

Existing drivers:
File 'Drivers\ASPI32.SYS': Ver=4.71 (0001) built by: WinDDK, size=16512 bytes, created 5/6/2002 11:01:14 AM
File 'Drivers\atapi.sys': Ver=5.1.2600.1106 (xpsp1.020828-1920), size=86912 bytes, created 8/29/2002 1:27:50 AM (Adapter driver for rec)
File 'Drivers\atapi.sys': Ver=5.1.2600.1106 (xpsp1.020828-1920), size=86912 bytes, created 8/29/2002 1:27:50 AM (Adapter driver for src)

Registry Keys:
HKCU\Software\MPET\VCool (Power saving: VCool)
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)


That Vcool thing down there means that Vcool is running? And I thought I had removed it...

Also, is there a way, in XP, to upgrade the firmware of my drive to the hacked version 1.0n?
Thanx!