Nec 2510A reading problems

hi i have a nec2510a, the writing works fine… i can burn enything… but the dvd’s that are burned on this drive, cant be play there!, i use HP and verbatim media, i know the dvd are well writen cose i can play them on my old teac dvd writer… what can it be ?
heres the nerohistory

Windows XP 5.1
IA32
WinAspi: -
ahead WinASPI: File ‘C:\Archivos de programa\Ahead
ero\Wnaspi32.dll’: Ver=2.0.1.74, size=164112 bytes, created 26/10/2004 05:35:34 p.m.
Nero Version: 6.6.0.8 (Nero Express)
Recorder: <_NEC DVD_RW ND-2510A> Version: 2.18 - HA 1 TA 1 - 6.6.0.8
Adapter driver: <atapi> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ATAPI
CD-ROM: <_NEC DVD_RW ND-2510A >Version: 2.18 - HA 1 TA 1 - 6.6.0.8
Adapter driver: <atapi> HA 1

=== Scsi-Device-Map ===
DiskPeripheral : Maxtor 6Y080L0 atapi Port 0 ID 1 DMA: On
CdRomPeripheral : _NEC DVD_RW ND-2510A atapi Port 1 ID 1 DMA: On

=== CDRom-Device-Map ===
_NEC DVD_RW ND-2510A D: CDRom0

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 74448896 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 511MB (523760kB)
Free physical memory: 355MB (364488kB)
Memory in use : 30 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

14.7.2005
ISO compilation
04:03:54 p.m. #1 Text 0 File Isodoc.cpp, Line 6172
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

04:03:54 p.m. #2 Text 0 File Reader.cpp, Line 127
Reader running

04:03:54 p.m. #3 Text 0 File Writer.cpp, Line 122
Writer _NEC DVD_RW ND-2510A running

04:03:54 p.m. #4 ISO9660GEN -11 File geniso.cpp, Line 3293
First writeable address = 0 (0x00000000)

04:03:54 p.m. #5 Text 0 File Burncd.cpp, Line 3153
Turn on Disc-At-Once, using DVD media

04:03:54 p.m. #6 Text 0 File DlgWaitCD.cpp, Line 259
Last possible write address on media: 2295103 (510:01.28, 4482MB)
Last address to be written: 2148047 (477:20.47, 4195MB)

04:03:54 p.m. #7 Text 0 File DlgWaitCD.cpp, Line 271
Write in overburning mode: NO (enabled: CD)

04:03:54 p.m. #8 Text 0 File DlgWaitCD.cpp, Line 2316
Recorder: _NEC DVD_RW ND-2510A, Media type: DVD+R

04:03:54 p.m. #9 Text 0 File DlgWaitCD.cpp, Line 433
>>> Protocol of DlgWaitCD activities: <<<
=========================================

04:03:54 p.m. #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 + 2148048 (2148048) = #2148048/477:20.48
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 2148048 blocks [_NEC DVD_RW ND-2510A]
--------------------------------------------------------------

04:03:54 p.m. #11 Text 0 File ThreadedTransferInterface.cpp, Line 1043
Prepare recorder [NEC DVD_RW ND-2510A] 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 4399202304, ISRC “”
DAO layout:
===========
Start|Track|Idx|CtrlAdr|RecDep
____
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
2148048 | lead-out | 1 | 0x41 | 0x00

04:03:55 p.m. #12 Phase 24 File dlgbrnst.cpp, Line 1832
Caching of files started

04:03:55 p.m. #13 Text 0 File Burncd.cpp, Line 4040
Cache writing successful.

04:03:55 p.m. #14 Phase 25 File dlgbrnst.cpp, Line 1832
Caching of files completed

04:03:55 p.m. #15 Phase 36 File dlgbrnst.cpp, Line 1832
Burn process started at 6x (8.310 KB/s)

04:03:55 p.m. #16 Text 0 File ThreadedTransferInterface.cpp, Line 2609
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

04:03:55 p.m. #17 SCSI -1066 File Cdrdrv.cpp, Line 1181
SCSI Exec, HA 1, TA 1, LUN 0, buffer 0x03886000
Status: 0x04 (0x01, SCSI_ERR)
HA-Status 0x00 (0x00, OK)
TA-Status 0x02 (0x01, SCSI_TASTATUS_CHKCOND)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x24
Sense Qual: 0x00
CDB Data: 0xAD 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x04 0x00 0x00
Sense Data: 0x70 0x00 0x05 0x00 0x00 0x00 0x00 0x0A
0x00 0x00 0x00 0x00 0x24 0x00

04:03:55 p.m. #18 Text 0 File DVDR.cpp, Line 5937
Book Type counter: 500, Book Type selected in EEPROM, command version 4

04:03:55 p.m. #19 Text 0 File DVDR.cpp, Line 5937
Book Type counter: 500, Book Type selected in EEPROM, command version 4

04:03:55 p.m. #20 Text 0 File DVDR.cpp, Line 5937
Book Type counter: 500, Book Type selected in EEPROM, command version 4

04:03:55 p.m. #21 Text 0 File DVDR.cpp, Line 5061
Drive: _NEC DVD_RW ND-2510A
Book Type request [NEC]: DVD-ROM, write to RAM
select Book Type setting from RAM
Changing the Book Type was finished successfully, return code 0

04:03:55 p.m. #22 CDR -1207 File DVDR.cpp, Line 4772
Book Type automatically set to: DVD-ROM

04:03:55 p.m. #23 Text 0 File DVDPlusRW.cpp, Line 638
Start write address at LBA 0
DVD high compatibility mode: Yes

04:18:21 p.m. #24 Text 0 File WriterStatus.cpp, Line 116
<_NEC DVD_RW ND-2510A > start writing Lead-Out at LBA 2148048 (20C6D0h), lenght 0 blocks

04:18:21 p.m. #25 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

04:18:48 p.m. #26 Text 0 File DVDR.cpp, Line 5937
Book Type counter: 500, Book Type selected in RAM, command version 4

04:18:48 p.m. #27 Text 0 File DVDR.cpp, Line 5937
Book Type counter: 500, Book Type selected in RAM, command version 4

04:18:48 p.m. #28 Text 0 File DVDR.cpp, Line 5061
Drive: _NEC DVD_RW ND-2510A
Book Type request [NEC]: DVD-ROM, write to RAM
select Book Type setting from RAM
Changing the Book Type was finished successfully, return code 0

04:18:49 p.m. #29 Phase 37 File dlgbrnst.cpp, Line 1832
Burn process completed successfully at 6x (8.310 KB/s)

Existing drivers:
File ‘Drivers\PXHELP20.SYS’: Ver=2.03.28a, size=20640 bytes, created 11/03/2005 07:28:13 p.m. (Prassi/Veritas driver for win 2K)
File ‘Drivers\atapi.sys’: Ver=5.1.2600.2180 (xpsp_sp2_rtm.040803-2158), size=95360 bytes, created 03/08/2004 05:59:44 p.m. (Adapter driver for rec)

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

Normal on most 2510’s. Just use it for writing. I’ve just bought a £15 Lite-On 16P9S DVD-ROM to complement my 2510 but there may be better options.