Hi all, I have tested LnS 2.05p2 (base install) under w2003-SP1 and here are some results: - do not seem to crash with base 2.05sp2 version, standard settings (no advanced option such as DLL, stateful TCP, etc.) - seem to crash when using an advanced option (DLL, stateful TCP, etc.) With the supplementary patches for lnsfn(1).sys: - crashes (bsod) are VERY frequent with these latest patches. Cannot almost use the computer. Hints: - I am using also CfosSpeed; seem like the interaction between these 2 programs is unstable? (After having installed CfosSpeed, I had to reinstall everything from the start because LnS was crashing at every reboot. Then reinstalled everything from scratch carefully. Worked fine until I activated the advanced options. I reverted back to standard options but am still anxious about server crashes). Crash info: - Lnsfn1.sys : base BAE8469B at BAE77000 datestamp 413E0419 Have you got some tips for W2K3 so that I can use it under this system without fear. Thanks, Kran.