Problème de gravure avec nero

bonjour, j'ai un problème de gravure avec néro.
Du jour au lendemain je n'ai plus pu graver car néro s'arrétait au bout de 10% pouvez vous m'aider s'il vous plait ? merci !!!
voici le log... auquel je ne comprend strictement rien...


1A20-0217-0000-1892-6143-8930*

Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File 'C:\Program Files\Ahead\nero\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 02/11/2004 12:54:32

NT-SPTI used
Nero Version: 6.6.1.4
Internal Version: 6, 6, 1, 4d
(Nero Express)
Recorder: <MATSHITA UJ-840D> Version: 1.00 - HA 1 TA 0 - 6.6.1.4
Adapter driver: <IDE> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ?
CD-ROM: <MATSHITA UJ-840D >Version: 1.00 - HA 1 TA 0 - 6.6.1.4
Adapter driver: <IDE> HA 1

=== Scsi-Device-Map ===
DiskPeripheral : IC25N080ATMR04-0 atapi Port 0 ID 0 DMA: On
CdRomPeripheral : MATSHITA UJ-840D atapi Port 1 ID 0 DMA: On

=== CDRom-Device-Map ===
MATSHITA UJ-840D E: CDRom0
=======================

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 83886080 (83886080) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 510MB (523056kB)
Free physical memory: 158MB (162456kB)
Memory in use : 68 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

6.7.2006
CD-ROM (ISO)
19:16:54 #1 Text 0 File Isodoc.cpp, Line 6475
Iso document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : FALSE
Multisession : TRUE
Multisession type: : Start multisession
Burning mode : TAO
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

19:16:54 #2 Text 0 File Burncd.cpp, Line 3012
MATSHITA UJ-840D
Buffer underrun protection activated

19:16:54 #3 Text 0 File ThreadedTransfer.cpp, Line 531
ReadBuffer-Pipe got 81920KB of Memory

19:16:54 #4 Text 0 File Reader.cpp, Line 124
Reader running

19:16:54 #5 Text 0 File Writer.cpp, Line 122
Writer MATSHITA UJ-840D running

19:16:54 #6 ISO9660GEN -11 File geniso.cpp, Line 3312
First writeable address = 0 (0x00000000)

19:16:54 #7 Text 0 File Burncd.cpp, Line 3305
Turn on Track-At-Once, using CD-R/RW media

19:16:54 #8 Text 0 File DlgWaitCD.cpp, Line 281
Last possible write address on media: 359848 ( 79:59.73)
Last address to be written: 357662 ( 79:30.62)

19:16:54 #9 Text 0 File DlgWaitCD.cpp, Line 293
Write in overburning mode: NO (enabled: CD DVD)

19:16:54 #10 Text 0 File DlgWaitCD.cpp, Line 2612
Recorder: MATSHITA UJ-840D

19:16:54 #11 Text 0 File DlgWaitCD.cpp, Line 459
>>> Protocol of DlgWaitCD activities: <<<
=========================================

19:16:54 #12 Text 0 File ThreadedTransferInterface.cpp, Line 847
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 357663 (357663) = #357663/79:28.63
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 357661 blocks [MATSHITA UJ-840D]
--------------------------------------------------------------

19:16:54 #13 Text 0 File ThreadedTransferInterface.cpp, Line 1059
Prepare recorder [MATSHITA UJ-840D] for write in TAO
DAO infos:
==========
MCN: ""
TOCType: 0x00; Session Closed, disc not fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 307200 732801024, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
-150 | lead-in | 0 | 0x41 | 0x00
-150 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
357663 | lead-out | 1 | 0x41 | 0x00

19:16:54 #14 Text 0 File ThreadedTransferInterface.cpp, Line 1127
Removed 2 run-out blocks from end of track 1. Length: 357663 -> 357661.

19:16:54 #15 Text 0 File SCSIPassThrough.cpp, Line 38
SPTILockVolume - completed successfully for FCTL_LOCK_VOLUME

19:16:54 #16 Text 0 File SCSIPassThrough.cpp, Line 83
SPTIDismountVolume - completed successfully for FSCTL_DISMOUNT_VOLUME

19:16:54 #17 Phase 24 File dlgbrnst.cpp, Line 1685
Caching of files started

19:16:54 #18 Text 0 File Burncd.cpp, Line 4145
Cache writing successful.

19:16:54 #19 Phase 25 File dlgbrnst.cpp, Line 1685
Caching of files completed

19:16:54 #20 Phase 36 File dlgbrnst.cpp, Line 1685
Burn process started at 24x (3 600 KB/s)

19:16:54 #21 Text 0 File ThreadedTransferInterface.cpp, Line 2685
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

19:16:54 #22 Text 0 File Mmc.cpp, Line 21840
Set BUFE: Buffer underrun protection -> ON

19:17:39 #23 SPTI -1135 File SCSIPassThrough.cpp, Line 289
E: CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1135)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x0C
Sense Qual: 0x00
CDB Data: 0x2A 00 00 00 42 40 00 00 20 00 00 00
Sense Area: 0xF1 00 03 00 00 3F DE 0A 00 2B 00 00 0C
Buffer x07530000: Len x10000
0x6D 0A DA 31 47 10 E2 0A 44 CA 3B BD 63 2E 2A BC
0x48 D4 E9 36 69 8F 3F 19 43 7C E7 7B 98 21 51 18
0x89 24 F2 92 94 98 B6 B6 10 8E E6 4F 19 82 C2 62

19:17:39 #24 CDR -1135 File Writer.cpp, Line 311
Write error
E: MATSHITA UJ-840D

19:17:40 #25 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

19:17:40 #26 Text 0 File ThreadedTransfer.cpp, Line 222
conversion idle, stopping reader

19:17:40 #27 CDR -201 File WriterStatus.cpp, Line 200
Invalid write state
E: MATSHITA UJ-840D

19:17:40 #28 TRANSFER -18 File WriterStatus.cpp, Line 200
Could not perform EndTrack

19:17:40 #29 Text 0 File Mmc.cpp, Line 16608
<MATSHITAUJ-840D > start Close Session

19:18:13 #30 Phase 38 File dlgbrnst.cpp, Line 1685
Burn process failed at 24x (3 600 KB/s)


Existing drivers:
File 'Drivers\PXHELP20.SYS': Ver=2.03.32a, size=20640 bytes, created 17/11/2005 18:19:30 (Prassi/Veritas driver for win 2K)
File 'Drivers\InCDfs.SYS': Ver=4, 3, 0, 5, size=93440 bytes, created 13/09/2004 11:54:06 (InCD4 driver for win NT/2K/XP)
File 'Drivers\InCDpass.SYS': Ver=4, 3, 0, 5, size=28672 bytes, created 13/09/2004 11:54:46 (InCD4 driver for win NT/2K/XP)
File 'Drivers\InCDrec.SYS': Ver=4, 3, 0, 5, size=7680 bytes, created 13/09/2004 11:58:10 (InCD4 driver for win NT/2K/XP)

Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)