I have check the machine (Win 7 x86) and found these version of files:
Dwrite.dll 6.2.9200.16571 1,247,744 09-Apr-2013 23:34 x86 (http://support.microsoft.com/kb/2835361/sv)
Fntcache.dll 6.2.9200.16492 906,240 13-Jan-2013 20:30 x86 (http://support.microsoft.com/kb/2670838)
According MS13-081 files should have
Fntcache.dll 6.1.7601.18245 808,448 27-Aug-2013 08:21 x86
Fntcache.dll 6.1.7601.22434 808,448 27-Aug-2013 08:40 x86
Dwrite.dll 6.1.7601.18245 1,077,760 27-Aug-2013 08:21 x86
Dwrite.dll 6.1.7601.22434 1,077,760 27-Aug-2013 08:40 x86
I guess Shavlik recognize that 6.2.xxxx > 6.1.xxxxx and think that MS13-081 is installed.
As next action I will try to install the patch manually.