Yo, just to say that GIMP 2.7.3 (development build) has been released at
PortableApps.com
portableapps.com/news/2011-08-30_-_gimp_portable_development_2.7.3
It include new features and the long-awaited Single window mode <img src="smileys/smiley32.gif" border="0" align="middle" />