Is there known worm/virus or Microsoft update, which causes following (started appearing about week or two ago , not only to me but also for a few friends having XP or Win2K):
- turn computer on
- browse Internet (works ok)
- close Internet explorer and leave computer on
- after a while open Internet explorer again
- go to any page and I get error "Page can not be displayed"
--> ping works fine to gateway address
--> fixup either start - run - ipconfig /renew or reair and then IE start working again
It seems to be the same with Mozilla and Outlook, so, it has to be something to do with a) routing or b) dns resolution.
Connnection is lost randomly and is not related to screen saver or power saving option (does it even if all those are disabled). If I look ipconfig when connection to Internet is failing, ip address, subnet and default gagteway looks ok. For some reason /renew fixes it. I think that ipconfig /renew fixes also dns server addresses and my worry is that there is either worm or ms patch, which affects dns settings. Something what Norton AV is not able to find.
Setup is simple: adsl natted 192.168 addresses to local LAN, where a few PCs connected. Default settings in XP (MS client, tcp/ip stack, NIC). Norton Antivirus is used. SP1 on XP Pro.
This started about week or two ago and I have a couple of firends who have reported similar behavior. With computers having static ip address everything works fine. ADSL router support says that they have seen similar behavior occasionally, but they don't know cause of the problem (is not their router, has to be XP or 2000).