Has anyone else seen ZESUser.exe consuming all available CPU? It doesn't happen on all machines and it doesn't happen every day, but when it does it considerably slows down the normal use of the system. I've seen it on some days on my own machine and heard about it happening on some other machines. All are XP SP3. With or without cumulative update 1 doesn't seem to make a difference. 'zac cc' hasn't helped, as well as completely uninstalling and reinstalling the agent. I've tried to look at agent log on local machine as well as in ZCC and can't see anything unusual. AV exclusions are in place according to TID7007545 (except when I looked at it just now I noticed it had been updated on May 26 and I probably don't have all the very latest additions).