In AutoCAD 2006, if you use a main CUI with one or more partials, as well as an enterprise CUI with one or more partials, then your toolbars may not stay in place when you start AutoCAD, even when youve saved then in a workspace. It appears that, at startup, the toolbars are placed according to the order that the CUI files are loaded rather than the layout that you saved in your workspace.

Workarounds: If you're using AutoCAD 2006, resetting the WSCURRENT system variable will restore the toolbar locations. The following code placed into your acad.lsp file should help.

(SETVAR "wscurrent" (GETVAR "wscurrent"))

If you're using 2000-2002, see this article for an Autodesk-suggested workaround.

First Appeared: AutoCAD 2000
Status as of 2006 SP1: Still reproducible
Status as of 2007: (unknown - please email with any info)
Status as of 2008: (unknown - please email with any info)
Status as of 2009: (unknown - please email with any info)