Please post software (include version number) that does and doesn't work with the PX-708A.
Of course over time new versions will fix issues, but for now this can hopefully serve as a reference that those experiencing problems can consult to see if others are having similar problems.
Software / version / media / result (OK or Fail) and speed:
Stomp RecordNow Max 4.5 Verbatim/TDK/Memorex 4X +R OK @ 8 X
Nero 6.0.0.11 Verbatim/TDK/Memorex 4X +R OK @ 8 X