Just a minor update today.
I noticed that on very large NZB files that there could be a very large slow down to where SpearNZB become unresponsive.
This was not in the application code but in a build config setting. After changing this setting, I'm getting the same CPU usage (30-50% on 1 core).
This could have been the bug where over 100% CPU usage was reported. If so then hopefully it's the end of that problem.
Happy Downloading,
Kraig