I have a mid-size Windows network (40 PCs, 3 AD servers) and everything was working fine until some months ago. suddenly, I started to see in some PCs and servers the weird "Generic host process" error. It even reappears a couple of days after the PC is reinstalled. All the solutions in internet involve patching, but my systems says that the patch is not required (seems that XP SP3 and Server 2003 SP1 already have the patch). Then a new problem appeared: many PCs simply cant browse the network because Workstation and Server services dont start. I have to go and manually start the services. A third problem appeared: one server (not AD server) is trying to start a session in several worsktations, generating a failure report, flooding the security log. Then, a fourth problem appeared: now the audio device fails in some PCs and user have to restart to have it workng again. all Pcs have Kaspersky 6, updated daily. Can somebody give me an idea about whats happening or how to solve it?