Created attachment 60857 [details]
Steps to reproduce
1. Open (e.g.) Word 2010.
2. Select "DejaVu Sans", no italic, no bold, 10pt
3. Write "åäö".
Created attachment 60858 [details]
Two screenshots are attached, showing the problem.
Largely, the issue is the same as in bug 7224 - at certain pixel sizes, diacritics rendering is less than optimal.
*** This bug has been marked as a duplicate of bug 7224 ***