Your suggestion, while it works, defeats the purpose of the feature.
I am also having this issue with Annotative text (using 3D 2008), we use a customized romans.shx font (which isnt an option to change). With EVERY qsave, the annotative text in the drawing (and any block containing either annotative text, or an atribute whose style is set to annotative) become non-editable.
The "fix" is the audit my drawing, after which time AutoCAD finds no errors and repairs no errors but the problem is "resolved" (at least until the next qsave)... but with a large C3D model drawing, this process can take 30sec-1min with every audit.
Is there something else I can change in my drawings (or my system) to resolve this issue? The potenital for annotative text is huge, but only if it works!
Justin