whats a recommended program for maintaining a stable windows environment. i have tried the following rollback v10. - it seems to work for a maximum of 30 days before it crashes the system forcing a reformat. clean slate v7- does most of the things it claims, but after messing with the registry (for testing purposes) it crashes forcing a reinstall. deep freeze standard - (bought it from faronics) does everything it claims but after being installed for a while it seems to make windows unstable unless you boot thawed. shadow defender - same as deep freeze. i dont care if the system is virtualized or not so long as its stable.