Well from what I've seen Overnet does only take about 5-10% of the CPU.

But once Overnet is running, it increases the SVCHOST.EXE via SYSTEM up to 100% after 45mins to 1 hour until SVCHOST crashes and the OS is forced to reboot. This happens every time and only when Overnet is running.

Since, I don't have this problem with CleanKMD or BT or Shareaza and actually just re-installed the OS from scratch it must be something with the Overnet client.

Just so you know, I'm only downloading 3 files at time and only hold 50 connections max, of which most of the time only about 13 connections are established.

Which is why I wonder if others have the same problem and which OS they use.