About the last builds and ini options...
1) Default Nightly Sphere with default ini now is complitely unstable. It has crashes on local with 1-3 testers.
It is fixable by disabling networkthreads and asyncnetwork.
2) More than a year I'm used 2011 build, because of problems in new builds, butnow I'm testing a last Nightly build.
The 1st, that I'm find is that setting networkthreads/networkpriority to 0 doesn't disable its at all. To disable its at all you must comment this lines at ini, LOL.
This fixes stange visual bugs at the specific situations and client crashes.
It may be a reason, why moving this options more above in ini, may help, may be this options not working if they have readen before something. But I didn't tested this.
3) Now I don't have stability problems about a 1.5 weak with peak online 20-30. It is with commented networkthreads/networkpriority and disabled asyncnetwork/usepacketpriority.
Also, there is something strange with packets reading in new builds, but now I'm not assure, that it is real problem.