Hello Guys, Got a weird one for you. I can take a unmodded Vista wim file and use package manger to slipstream updates and when you go to install Vista, it will freeze up between each stage til the files start copying. I mean at the product key stage it locks up for 2 min....next screen to choose you version...it locks up for 2 min...next screen pick the hard drive...locks up for 2 min....press delete partition...locks up for 2 min. If I install a non modded wim, of course nothing locks up. I am slipstreaming 151 updates all from Microsoft Update Catalog. I even used the new Windows 7 tool and Vista still freezes up between each screen till file copy starts. Like the memory is low. I have 4 gigs of ram and I use DISM to update my Win 7 wims and never have this problem with 7. I do not mod or add anything else. I do not add drivers to boot.wim or mod the boot.wim. I have used DISM to slipstream the updates in cab form to Vista with the same results.