* QA Notice: USE Flag 'thumbnailing' not in IUSE for app-misc/tracker-0.5.4-r1
Also, it seems that gsf, applet and fam support gets added regardless of the USE flag settings.
Fixed. http://sources.gentoo.org/viewcvs.py/gentoo-x86/app-misc/tracker/tracker-0.5.4-r1.ebuild?r1=1.5&r2=1.6