Originally Posted by
julesagain
Could be that old 'layer filter" bug - some drawings have accumulated thousands of layer filters, which bog down the layer commands. If your default drawing has this error, its going to keep causing problems every time you open it until you get it cleaned up. Do a search on "delete layer filter" and there are several excellent posts and some lisp routines to clear it up. I'm sorry I can't remember if they are here or on the Autodesk boards.
I think part of the problem with those layer filters is that some of the names contain ANSI characters, which hang up the whole process of reading through them. But it could simply be that there are so many of them. If you've ever gotten a drawing like this (I used to get them repeatedly from a couple of customers at big time arch/engineering firms - you'd think they'd know better) you will be banging your head on the keyboard in frustration until you discover that is the problem.
Hope that helps,
Jules