Multi-touch gestures doesn't seem to work

Ubuntu doesn't comes with multi-touch support, so I downloaded utouch. In the community site, it says that my mouse (Apple Magic Mouse) is supported. I tried "sudo mtdev-test /dev/input/event6" and multi-touch worked, but after I followed the instructions at https://wiki.ubuntu.com/Multitouch/Testing/UsingGeisview, and I had no success. I can use the mouse normally, but I would like to have gestures.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: utouch 1.2
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Mon May 14 19:53:54 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64+mac (20120425.1)
MachineType: Apple Inc. iMac10,1
MtDevices: Ratón de Francisco Gómez: /dev/input/event6
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=0c83a629-815e-421c-a948-c3afcd232ad0 ro quiet splash vt.handoff=7
SourcePackage: utouch
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/03/09
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM101.88Z.00CC.B00.0909031926
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F2268CC8
dmi.board.vendor: Apple Inc.
dmi.chassis.asset.tag: Asset Tag#
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2268CC8
dmi.modalias: dmi:bvnAppleInc.:bvrIM101.88Z.00CC.B00.0909031926:bd09/03/09:svnAppleInc.:pniMac10,1:pvr1.0:rvnAppleInc.:rnMac-F2268CC8:rvr:cvnAppleInc.:ct13:cvrMac-F2268CC8:
dmi.product.name: iMac10,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.