I've been an avid user of Nero for years.
I've always thought Nero was the best thing since sliced bread. However, the latest versions (Nero 8.x.x) are very buggy to say the least.
On my PC (which is a rather powerful system, and runs WinXP) I find that sometimes Nero crashes with an error stating that a Visual C++ Runtime error has occured.
Other software I use has started doing this too (Sony SonicStage for my Sony NetMD and Sony MP3 Player) does the same, but this all started once I installed Nero 8.

The worst culprit in the Nero suite for crashing like this, is the Nero WaveEditor, which crashes upon opening a file most of the time.

I'm now looking for alternatives, I've tried CDBurnerXP, but it doesn't burn MP3s on to AudioCD, I have to convert them to WAVs instead (and that was the latest version off their website)