I had no problems with drive recognition (but I only have 4 in one PC and 2 in another).
The TRT still has some dips in my test run - not as bad as 188.8.131.52, but CDSpeed 184.108.40.206 is better (see attachments).
One thing to watch out for is that the settings for DiscSpeed 5 are now stored in HKCU\Software\Nero[B]Nero 9[/B]\Nero Toolkit\Nero DiscSpeed (and not in … Nero 8). If you’ve made any custom settings, e.g. buffer size, the jitter scan speed for LiteOn drives or activated Samsung scans, you’ll have to repeat them for this version.
If you’re comfortable with regedit, probably the easiest thing to do is delete (or rename) the DiscSpeed entry under Nero 9 and copy the branch form Nero 8.