I'd love to keep ESET Cybersecurity for Mac, but I'm almost positive it's causing Mac OS X to become almost completely unresponsive. Periodically, the system will require tens of seconds to minutes to respond to each mouse click. Often, this is accompanied by very high CPU utilization by ESET. Just now, I had to restart the computer in order to regain control. Shortly after the system restarted, the symptoms began to return. Then, the ESET GUI appeared to die; it vanished from the menu bar. CPU utilization went back to normal. I started the ESET Cybersecurity app to get the GUI back, and CPU utilization went back up and the system started becoming unresponsive. ESET Cybersecurity Product version: 22.214.171.124 Update module 1031 Antivirus and antispyware scanner module 1318 Virus signature database 6418 Archive support module 1135 Advanced heuristics module 1118 Cleaner module 1051 Mac OS X 10.7.1 Macbook Air with 1.8 GHz Intel Core i7, 4GB RAM, 256GB SSD I'm uninstalling until at least the next ESET Cybersecurity update. If anyone has any suggestions, I'd love to hear them.