for some reason my capsule looks like this
I am totally confused by the random spikes on the end of the capsules, is this a bug or am i doing something silly again...

That's correct; I highly doubt the compact framework will include any of the new parallel stuff. Chances are that I'll make the thread manager as fast as I can get it, and when XNA migrates up to .NET 4.0 officially, BEPUphysics will support the .NET threadpool/TPL as an option on the PC while the xbox continues to use the new custom version.oh and i assume that the xbox and win phone don't support .net 4.0s thread manager.