I am running windows ultimate 32 bit on my dell latitutude d620. I am running an Intel Core 2 CPU 2.33 GHz with 4 gb of ram installed. All windows updates are installed, including the optional. With previous avast versions, it ran perfect with no issue. When upgraded to avast 7 free, I was able to get to the log on screen, input my password, and then it would freeze up saying welcome. At the times, very few, that it was able to get past that, when I would open any exe., it would freeze everything but the mouse. It kinda acted like it was having a hard time loading. After a few minutes it would freeze up completely until reboot. When I disabled all utilities that avast run, it did the same thing. If I was able to load up anything, for example the internet browser (google chrome) it would slow down my computer and show that google chrome was running 50% of my cpu. I have tried uninstalling windows and re-installing. I have tried a repair on avast. I have tried removing avast and re-installing. I have tried tried setting the settings to load avast after other programs. I've tried disabling most of the programs ran on avast. I've tried installing just the basic components of avast on a fresh install. I've removed microsoft security essentials. I have no other antivirus running on the computer. I have even removed malwarebytes on my system. I have removed my hard drive and placed it on a workbench machine to do a boot time scan on the hard drive. No problems were found. All of these things have not produced any progress. Any help would be greatly appreciated as this would save a lot of paying customers for you that I work for. I will going out to one of the customers tomorrow and get the specs off of their machine so you have a windows pro 64 bit example to work with too. Let me know if there is any other information that you need.