My Realtek NIC both in Windows 7 & Vista Ultimate, if i update to the following via windows update, my network and internet become a limited connection, i tried all know issues with networking to get it to work and no success, however rolling back or removing and reinstalling the driver from the orginal disk, everything is restored and workingThis is the offending update below.Realtek - Network - Realtek RTL8168B/8111B Family PCI-E Gigabit Ethernet NIC (NDIS 6.0)Download size: 68 KBYou may need to restart your computer for this update to take effect.Update type: OptionalDriverUpdate: Realtek Network software update released in June, 2007More information: http://winqual.microsoft.com/support/?driverid=20067296Help and Support: http://support.microsoft.com/select/?target=hub

This is happening to me as well, very frustrating indeed.

thanks for the heads up, this seems to solve the stablility issues i was having on my lan, although it still wont let me change the location of the adaptor and keeps defaulting back to public instead of work.half way there!