help! dvd dual layer not burning!

hi!

im having a having a macbook from february 2008 (the white one 2,4 ghz blablabla.. doesn't really matter

because of malfunction of my dvd drive.. i had it replaced (waranty) 9 months ago.

now i thing it's broken again when i try to burn a dual layer verbatim disc..i get this error:



tried it with toast and disk utility.. same result.
dvd's and cd's play fine. just burned an 80 min cd as well :S

dvd drive:

MATSHITA DVD-R UJ-857E:

Firmware Revision: ZF1E
Interconnect: ATAPI
Burn Support: Yes (Apple Shipping Drive)
Cache: 2048 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
Write Strategies: CD-TAO, CD-SAO, DVD-DAO
Media:
Type: DVD+R DL
ID: MKM 003
Blank: Yes
Erasable: No
Overwritable: Yes
Appendable: Yes
Write Speeds: 2.4x, 4x



maybe the lense is dirty but i rarely use the dvd drive.. will clean it tomorrow..but i don't think it will resolve my problem

anyone has a clue?

thnx alot!

scarfication

ps: couldn't find posts that could answer my question completely

ps2: if it's broken anyone has a tip wich dvd drive is the best to replace?

 

why?

why is apple selling macbooks with such horrible quality dvd players.
even so.. they put a broken drive back in my waranty period!
but now aftwer 3 moths i can't do anything..
to replace a laptop dvd drive is more expensive then a external one

wtf!