Fonts suddenly started using full hinting instead of slight, without changing any configuration

[The Fiddler]

After running the latest updates for oneiric (as of 02Sept2011), my fonts suddenly became fully-hinted and ugly. They were slightly-hinted before.

Note that I have not changed *any* configuration options. I'm using an alpha3 Oneiric installation upgraded all the way to beta1. Hinting changed all by itself (and it's ugly!)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: fontconfig 2.8.0-3ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
Uname: Linux 3.0.0-9-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Fri Sep 2 13:24:35 2011
SourcePackage: fontconfig
UpgradeStatus: Upgraded to oneiric on 2011-08-26 (7 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jay S (topdownjimmy)]

I'm not sure if this is the correct bug to be adding to, but I just upgraded to Oneiric today and any fonts involved in Unity are horribly hinted. They have very jagged edges, whereas the rest of my desktop is configured with ~/.fonts.conf to have no hinting and is behaving correctly.

[The Fiddler (stapostol)]

This issue goes away on a clean install, it only appears on an upgrade
install. Installing gnome-tweak-tool and resetting font settings also works!

@Jay S, this is a slightly different issue (i.e. Unity reading font
configuration from somewhere else than the rest of the system, while in my
case the whole system is reading configuration from some unknown place).