When I read though the thread, it does not seem to be getting to a solution. Forgive me, but I have just run through and condensed the useful input, leaving out the general comment. The OP, flores.uprm, stated that it happened a lot and the task manager "all too common" is commented. The next posted comment is the reference to the bug, and a "fix" from Microsoft .Fwiw, I can only see a initial reference to this problem, on Chrisnt123's page. The fix was referred to by Mary Foley and the same reference abounds throughout the web. Nowhere, have I seen the fix on Microsoft's own pages. This was it: Turn Off Windows Customer Experience Improvement Program which can be done by traversing through the nodes. If anyone is confused here: The easiest way to get to the "node" is to type, in the RUN, - Gpedit.msc. - Then follow the string suggested: - Computer Configuration->Administrative Templates->System->Internet Communication Management->Internet Communication settings When you get down to the line "Turn off Customer Experience Program", double click it and, in the new window, enable it. “Microsoft deployed a configuration change which exposed this (installer) problem. New machines installing Windows 7 Beta will not experience this problem. An issue related to the Customer Experience Improvement Program (CEIP also known as SQM) client in the Windows 7 Beta is causing crashes of Explorer, MSI-based installers and other applications. In order to resolve the issue, impacted customers need to run the following script from an elevated command prompt. This script will stop crashes related to CEIP and removes those changes (registry keys) to prevent further CEIP related crashes. “Detailed instructions: 1. Select and copy the following to your clipboard: reg delete HKLM\SOFTWARE\Microsoft\SQMClient\Windows\DisabledSessions /va /f 2. Click on “Start”, then “All Programs”, then “Accessories” 3. Right click on “Command Prompt”, then click on “Run as administrator” 4. In the UAC prompt, verify that the program’s name is “Windows Command Processor” and then click “Yes” 5. Right click on the “Administrator: Command Prompt” window’s black area, then select “Paste” 6. Press “Enter”, you should see “The operation completed successfully”. If you see “ERROR: Access is denied”, please make sure you followed Step 3. 7. Close the “Administrator: Command Prompt window” My own download was from a technet subscription. I have not received any official notification from MS about this bug. However, I have Windows 7 installed on two machines. One is a 4 year old laptop. On the laptop I have deployed the fix. I have tried to simulate the faults, following this thread, on both machines, but am unable to crash anything ?? I am not denying that there is a problem, as many are experiencing it, but I do wonder if it is not related to a particular source of download? In a follow up post, Flores mentions "after a recent update". I have only received two updates, directly related to the OS, although I have had quite a few concerning some Microsoft software I have installed. Neither of the two updates are in any way related to this problem. Later Veritas comments on adjustments to the UAC, whichh seemingly did not change the situation. There is very little information in the thread, concerning the where and how of the installations, and the hardware. I doubt the latter is the problem, though, unless an item of hadrware is stuffing the memory. The technet forum posters seem to think it is harware related, however. My own old laptop is with an onboard Nvidia 7600 - not too brilliant. The CPU is 1.6 - not too brilliant! and it only has 2gbs memory. I have not experienced any hangs or other, since the original installation. Maybe of some importance, but I should say I am running as the global Administrator My only ideas on the subject are. 1. Have the posters on this thread made a clean install or an upgrade over a legacy install? (Mine is always a clean install) 2. If you browse, you will find that some software is giving problems with Bsod's and hangs. Most widely read culprits are Norton and Power Archive. P.S I have deleted the offensive posts, so that we can stay on track!