An hour @8x? It is too slow!
Is your harddisk under load while burning? My crappy computer/harddisk got 30x reading speed at transfer rate test.
How do your Nero report? After you finished burning, it will show a message box like "burning at ??x successfully". Does it show "at 8x"?
Also, how is the disc quality? Can you read it back?
Anway, I found that the reading speed of my 1213S @ 1653S drops, but the writing speed is still fine (~15min @4x).
One more unrelated question, do you know Cantonese?