If you have problems with AutoCAD 2006 read this

AutoCAD 2006 Service Pack 1 Final Release Candidate is just around the corner. If you want to make an impact on it check this post from Shaan Hurley at Autodesk. There is still time to either have critical fixes solved by SP1 or to stop new problems introduced by SP1.
Some of my favorite fixes in SP1 are the following:
-External references (xrefs) that have been unloaded are no longer reloaded when you click a balloon notification in the host drawing.
-You can now run a script to open another drawing after the first drawing has been closed.
-Dot linetypes with line weight are now plotted correctly.
-Plot styles for systems with a large number of plot styles are now assigned properly.
-The time needed to open the Plot dialog box has improved for customers who have a large number of plot styles.
-The name of the layout is now correctly appended to the file name for drawings that are plotted or published to PDF.
-Inability to close the Attribute Extraction dialog box (EATTEXT) under some circumstances has been corrected.
Still there are other bugs and problems not solved as you can see on my AutoCAD 2006 page.