I recently purchased a Linksys wireless router and have dynamic IP addressing turned on. My PC is wired but the remaining PC's connect wirelessely. I also have Malwarebytes installed. I find that if I install an antivirus like Avast or MS Security essentials as well, my PC freezes. If I remove the antivirus all works OK. I suspect there antivirus programs are trying to operate before the dynamic IP addressing is resolved and freezing up. The other PC's don't experience the problem.
Any ideas ?