I have an odd situation regarding the memory usage of the Dock on a multi-user iMac running Lion 10.7.1. When looking for processes using a lot of memory on my computer I noticed that the usage of the Dock on my login was significantly higher than the Dock running on my family's other two accounts running in the background. In fact when I first looked it was higher than Firefox 6.0 with 5 tabs open! Currently it is 211MB and theirs are about 30MB. I tried deleting the Dock plist and db preference files, killing my Dock process, removing all the widgets from the dashboard and most of the icons from the Dock, and rebooting the computer. I even tried logging into the accounts in a different order but the result was the same. Running Activity Monitor on the other accounts while they were in the foreground shows the same result too. The only differences I can think of are that I have administrative rights and the other accounts are standard users, and that my desktop is far more cluttered. And just to throw a spanner in the works, as I write this I checked and found my Dock process sitting at 38Mb.... the ONLY time I have seen it less than 200MB! My questions are: Is this difference normal? And is this a normal amount of memory usage for the Dock? If it is then why are the other accounts on the same computer using 85% less?