After a year and still no fix?
I'm having the same problems. Text in the title block rotated, dimensions rotated, random text in the drawings rotated.
I am having this same problem in Civil 3D 2010.
Three years and 3 AutoCAD updates later and still no response from AutoDesk....
Is this really that difficult to correct? Where is AutoDesk?
I believe the resolution has to do with the text style.
I went into the text style editor and unchecked the "annotative" check box. I then went into the text properties and changed annotative text to "no". That fixed the problem. I'm not sure why that fixes the problem but it does.