I seem to be having a similar problem.
At the start of this year I bought a Pioneer 108.
I am currently running with the latest firmware and the latest updates for Nero.
Over the weekend I was trying to burn an audio CD which had 2 audio tracks (wav files) all up was about 40 minutes in length
So far I have tried to burn 3 cd's and all have failed data verification.
The first blank I tried was burnt at 32 speed
Admittedly the blank was a cheap generic pack that I bought a while ago.
The disk has the brand "Sky" on it and is rated to 48x
The log identified this blank as
CDR code: 00 97 27 28; OSJ entry from: Princo Corporation
Then I tried to "imation" disks one which I burnt at 32x and the 2nd at 4x
Both of these were burnt with the "simulation" option checked in Nero
The log identified these as
CDR code: 00 97 26 66; OSJ entry from: CMC Magnetics Corporation
I have yet to listen to the disks, but I might later tonight to see if I can hear anything worng with the audio.
I also have a couple of "Verbatim" blanks which I might also try.
Its a little disapionting that I have had 3 fails in a row, my previous drive (a Samsung Combo drive) didn't have any problems at all with these disks, although the drive did give up the ghost after about 2 years of operation.