Yup, I installed ESS RC1 a few days ago in my Vista, and it failed to turn off the Vista firewall. It's no great shakes that it didn't turn it off, but other users may not check that it had in fact been turned off. Possibly it's only me. I have that truly awfull UAC off. Just thought I'd post this in the event it may be a bug. Following on from another poster, I'd appreciate in the sys. tray icon the option to have a right click to turn off ESS. I do video Editing and turn off my A-V's etc.