When you attempt to display a tooltip of a multiline text (mtext) attribute that contains 281 characters or more, AutoCAD crashes.If AutoCAD 2009 Update 2 is installed on your system, attribute text may be misaligned.If you use annotation scaling to delete a layout viewport, AutoCAD may crash.Switching layouts that contain viewports with hatched objects may take an unusually long time.

When a drawing contains incorrect block references and the SAVEFIDELITY system variable is set to 1, if you attempt to save the drawing, AutoCAD crashes.If you select undo or close the drawing, AutoCAD crashes. When a multileader (mleader) with a missing or invalid style is edited, it disappears from the display.The scale of annotative text changes when you use LISP entmod() to change the properties of the annotative text.A scale is infinitely enumerated when you insert a drawing that contains the same scale as a block or an external reference (xref).A drawing that contains a large number of anonymous blocks and copies of annotative entities created in AutoCAD 2007 or an earlier release opens slowly in AutoCAD 2009.If you create a wipeout object through.NET function with a LispFunction attribute has the return type as object, an exception is issued in AutoCAD. When you plot a drawing, a plot style assigned to a layer does not display in the plotted output.When orbiting a 3D model with a 3D polyline, AutoCAD may crash.When you use a 3D navigation command, such as 3DORBIT or 3DPAN, to maintain performance, the display degrades.When you use the ViewCube in some drawings, AutoCAD freezes.

If a layer is set to the color BYBLOCK and you plot the drawing, AutoCAD crashes.

On Windows XP, AutoCAD 2009 may crash when Windows XP is suspended or placed in hibernation mode.

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