Basic problem: the latest and greatest (for mac) from ESET does not start up automatically, and even a manual start results in only a process not doing anything (though not using CPU either).
Details: I'm on 10.8.2 on the weakest MacBook Pro from early 2011. I had ESET CyberSecurity version 4 before, and removed as well as I could, long ago. Then I tried to install version 5 recently, which did not work, until I ran both uninstallers: first version 4, then 5, and installed 5. Everything seemed OK, it activated, updated itself etc. Then I ran an Onyx instance of maintenance overnight (even rebuilding Spotlight etc.) because my mac went unresponsive (not frozen, as it could go to screen saver, then sleep, but reacted only to the power button) and I had to cold reboot it. So after the reboot Onyx recommended, I saw no Eset in the menu bar, nor a process in Activity Monitor. But I am not sure I should blame other things on my system (Dropbox 1.7.2, Blackblaze etc. in the background) than ESET itself, as other people had installation problems too (see this), and my problem reappeared after a simple uninstall-reinstall cycle:
I took time and uninstalled-and-reinstalled version 5. Still no start after reboot (this time no messing with Onyx or pausing a scan). However, I found a process running after I tried to fire up ESET manually, but it barely uses the CPU (in Activity Monitor) and does not pop a window or the icon in the menu bar. It crashed or finished soon after this.
I attached a sample of the process in the ESET forums: http://www.wilderssecurity.com/showthread.php?t=341928
After another reboot, I saw 'the' app (Eset CyberSecurity) among processes but not in the menu bar, and also an eset-daemon process (and a third quickly transient one), but they finished or crashed after a while.
Thanks for any thoughts.