>>Kind of odd, but for different users on the same box the number of visible QuickLaunch programs before it shows the little double arrow is not the same. There is plenty of room on the Taskbar, but it only allows 3 icon before the 4th one goes into the dropdown (dropup?) to save space. For another user it allows 8 before the ninth goes up into the double arrow world. I can't find a reference anywhere to changing this number. Anyone know about this? Thanks!
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>These preferences are stored by user (login). To customize them, right click on the taskbar. For that setting, choose Properties and then check or uncheck "Group similar taskbar buttons."

No, this is different (I think). I'm talking about the QuickLaunch, immediately next to the Start button in the bottom left corner. To the right of QuickLaunch is what I believe you're referring to. That has to do with the current open windows; if 3 IE windows are open, it will group them. The QuickLaunch is used to start programs. Keeps your desktop clean.