I've got a computer running Vista home premium that was giving me issues with the cisco VPN client. The system would give an error that it could not enable the virtual adapter. So I checked the PC out and found that although it was set to install updates automatically, it was running with no service packs installed. So I installed SP1 and that went okay. Next I installed SP2 and that took a while and just about when I thought it was about to finish it stopped and gave an error that it could not install. I rebooted and tried again and now it reports that I can't install SP2 because SP1 must be installed first. So I download and install the MS System Update Readiness tool an it runs for hours and then completes and then I installed Sp2 successfully. Now that I have that installed any time I try and install anything using the windows installer, the install hangs. Running an msi or trying to install a windows update causes the updated to hang and takes explorer with it. I've run chkdsk and sfc /scannow and they come up clean. I tried running the onecare safety scanner but it won't run. I've run the ccleaner registry repair and it didn't help... Any suggestions?