If you’re using AutoCAD® 2008, then you may have experienced slow copy/pasting in some drawings. This is one of the symptoms of a problem known as the scale list bug. This is where the annotation scale list has for some reason accumulated a huge number of scales. There is a quick fix however – you can simply purge the scale list by using the SCALELISTEDIT command, but there’s another problem. The dialog box will not display if you have excessive scales. Preceeding the command with the minus sign (-SCALELISTEDIT) forces command line entry however, so we can bypass this problem. Select the option to reset, and hopefully this should fix the problem. This issue has a habit of spreading from drawing to drawing, so make sure you fix this is the whole set of drawings you’re experiencing problems with.
For a more permenent fix, you could try adding the following line of lisp code to either acaddoc.lsp, or acad2008doc.lsp:
(COMMAND “-scalelistedit” “R” “Y” “E”)
This will simply reset the scale list every time a drawing is opened.
Hope this helps,