Vaya, pues si antes digo de que está solucionado... y acabo de volver a tener el problema al grabar un DVD-R. Sin embargo, ahora mismo estoy grabando un CD-RW, y sin problema!! Ya no entiendo nada!!

Pongo el log del error que me ha salido en la grabación del DVD-R:
Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File 'C:\Archivos de programa\Ahead\Nero\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 26/10/2004 17:35:34
Versión de Nero: 6.6.0.3
Grabador: <TSSTcorp CD/DVDW TS-H552U>Versión: US06 - HA 1 TA 0 - 6.6.0.3
Controlador de adaptador:<atapi> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ATAPI
CD-ROM: <TSSTcorp CD/DVDW TS-H552U>Versión: US06 - HA 1 TA 0 - 6.6.0.3
Controlador de adaptador:<atapi> HA 1
=== Scsi-Device-Map ===
DiskPeripheral : ST3160021A atapi Port 0 ID 0 DMA: On
CdRomPeripheral : TSSTcorp CD/DVDW TS-H552U atapi Port 1 ID 0 DMA: On
CdRomPeripheral : TOSHIBA DVD-ROM SD-M1912 atapi Port 1 ID 1 DMA: On
=== CDRom-Device-Map ===
TSSTcorp CD/DVDW TS-H552 H: CDRom0
TOSHIBA DVD-ROM SD-M1912 D: CDRom1
=======================
AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 83886080 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 1022MB (1047020kB)
Free physical memory: 523MB (535956kB)
Memory in use : 48 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)
18.7.2007
Compilación ISO
19:15:38 #1 Text 0 File Isodoc.cpp, Line 6168
Iso document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO
Mode : 1
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660
Joliet : TRUE
Allow pathdepth more than 8 directories : TRUE
Allow more than 255 characters in path : TRUE
Write ISO9660 ;1 file extensions : TRUE
19:15:38 #2 Text 0 File Reader.cpp, Line 127
Reader running
19:15:38 #3 Text 0 File Writer.cpp, Line 122
Writer TSSTcorp CD/DVDW TS-H552U running
19:15:38 #4 ISO9660GEN -11 File geniso.cpp, Line 3286
First writeable address = 0 (0x00000000)
19:15:38 #5 Text 0 File Burncd.cpp, Line 3151
Turn on Disc-at-once, using DVD media
19:16:50 #6 Text 0 File DlgWaitCD.cpp, Line 256
Last possible write address on media: 2298495 (510:46.45, 4489MB)
Last address to be written: 1364217 (303:09.42, 2664MB)
19:16:50 #7 Text 0 File DlgWaitCD.cpp, Line 268
Write in overburning mode: NO (enabled: CD)
19:16:50 #8 Text 0 File DlgWaitCD.cpp, Line 2309
Recorder: TSSTcorp CD/DVDW TS-H552U, Media type: DVD-RW
Disc Manufacturer: TDK502 - sakuM3
Disc Application Code: 64, Disc Physical Code: 214
19:16:50 #9 Text 0 File DlgWaitCD.cpp, Line 430
>>> Protocol of DlgWaitCD activities: <<<
=========================================
This disc is not empty.
(Medium in drive: DVD-RW. Medium required by compilation: DVD+R/RW; DVD-R/RW; DVD+R9 Double Layer.)
VMS. Disc was erased successfully.
Accessing disc...
(Medium in drive: DVD-RW. Medium required by compilation: DVD+R/RW; DVD-R/RW; DVD+R9 Double Layer.)
19:16:50 #10 Text 0 File ThreadedTransferInterface.cpp, Line 830
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 1364368 (1364368) = #1364368/303:11.43
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 1364368 blocks [TSSTcorp CD/DVDW TS-H552U]
--------------------------------------------------------------
19:16:50 #11 Text 0 File ThreadedTransferInterface.cpp, Line 1040
Prepare recorder [TSSTcorp CD/DVDW TS-H552U] for write in CUE-sheet-DAO
DAO infos:
==========
MCN: ""
TOCType: 0x00; Session Closed, disc fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 2794225664, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
1364368 | lead-out | 1 | 0x41 | 0x00
19:16:50 #12 Phase 24 File dlgbrnst.cpp, Line 1832
Inicio del caché de archivos
19:16:50 #13 Text 0 File Burncd.cpp, Line 4038
Cache writing successful.
19:16:50 #14 Phase 25 File dlgbrnst.cpp, Line 1832
Caché de archivos terminado
19:16:50 #15 Phase 36 File dlgbrnst.cpp, Line 1832
Inicio del proceso de grabación a 2x (2.770 KB/s)
19:16:50 #16 Text 0 File ThreadedTransferInterface.cpp, Line 2596
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0
19:16:50 #17 Text 0 File DVDR.cpp, Line 2248
Recording mode: Sequential Recording Mode
19:16:50 #18 Text 0 File Mmc.cpp, Line 21025
Set BUFE: Super Link -> ON
19:16:50 #19 Text 0 File DVDR.cpp, Line 2389
Start write address at LBA 0
DVD high compatibility mode: Yes
19:16:50 #20 Text 0 File Cdrdrv.cpp, Line 8315
---- DVD Structure: Physical Format Information (00h) ----
Layer: 0, Address: 0 (0 h), AGID: 0; Length: 2050
Book Type: DVD-RW (3), Part Version: 2
Disc Size: 120 mm, Maximum Rate: <not specified> (F h)
Number of Layers: 1, Track Path: Parallel Track Path (PTP), Layer Type: recordable
Linear Density: 0,267 um/bit, Track Density: 0,74 um/track
Starting Physical Sector Number of Data Area: 30000 h (DVD-ROM, DVD-R/-RW, DVD+R/+RW)
End Physical Sector Number of Data Area: 23EBAF h
End Sector Number in Layer 0: 0 h
Data in Burst Cutting Area (BCA) does not exist
Start sector number of the current Border-Out: 0 h
Start sector number of the next Border-In: 0 h
Media Specific [16..63]:
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
19:16:52 #21 Text 0 File Cdrdrv.cpp, Line 1282
19:16:52.812 - TSSTcorp CD/DVDW TS-H552U\H1 T0 : Queue again later
19:16:54 #22 SCSI -1176 File Cdrdrv.cpp, Line 1430
SCSI Exec, HA 1, TA 0, LUN 0, buffer 0x034D0000
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x72
Sense Qual: 0x01
CDB Data: 0x2A 0x00 0x00 0x00 0x02 0x60 0x00 0x00 0x20 0x00 0x00 0x00
Sense Data: 0x71 0x00 0x03 0x00 0x00 0x00 0x00 0x0A
0x00 0x00 0x00 0x00 0x72 0x01
19:16:54 #23 CDR -1176 File Writer.cpp, Line 311
Error de fijación de la sesión
19:16:54 #24 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion
19:16:55 #25 Text 0 File ThreadedTransfer.cpp, Line 222
conversion idle, stopping reader
19:16:55 #26 Text 0 File DVDR.cpp, Line 2632
EndDAO: Last written address was 607
19:16:55 #27 Phase 181 File dlgbrnst.cpp, Line 1832
Grabando bloque lead-out...
19:16:55 #28 Phase 38 File dlgbrnst.cpp, Line 1832
El proceso de grabación ha fallado a 2x (2.770 KB/s)
Existing drivers:
File 'Drivers\CDRALW2K.SYS': Ver=8.0.0.212 , size=2560 bytes, created 19/05/2006 23:16:24
File 'Drivers\PXHELP20.SYS': Ver=3.00.56a, size=43528 bytes, created 08/03/2007 1:51:00 (Prassi/Veritas driver for win 2K)
File 'Drivers\atapi.sys': Ver=5.1.2600.2180 (xpsp_sp2_rtm.040803-2158), size=95360 bytes, created 04/08/2004 7:59:42 (Adapter driver for rec)
Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)