very slow dvd burning on my dell 1520 inspiron vista laptop

>
> hi!
> i don't know what happened,
> my dvd burner was ok...
> but now i can't burn even 1 dvd
> it's very verrrrrry slow. more than an hour.
> & it always fail in the data verification.
> i tried nero, roxio... i uninstalled it & reinstalled it.
> but the same problem.
> i tried different media...
> same thing.
> i don't know what happened. maybe i installed something that changed
> something in my vista settings?
> i uninstalled my "daemon tools". but the same problem.
> i remember i installed "macdrive" on my vista (a program). but i
> uninstalled it weeks ago.
> why it's burning soooo slow? (&why it failes in the data
> verification)?
> help
>
> btw i searched the net already & found that DMA issue.
> i went to my device manager & under IDE channel i have dma enabled. so
> this is not the case:
> http://i33.tinypic.com/2z900ft.jpg
> then i tried to delete the IDE channel & restarted vista & now it say
> "ATA Channel0":
> http://i36.tinypic.com/6ib8eb.jpg
> & the problem is the same...
>
>
> --
> perek
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