issue sub-categories of kpackagekit

Binary package hint: kpackagekit

When i click on a Category (eg Internet), it might contain sub-categories like Web Browser, Chat, etc...but clicking on Web Browser sub-categories, it doesn't happen nothing..but if i select Web Browser sub-categories and press Enter button on my keyboard, all works fine and kpackagekit display only web browser available in my repos.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: kpackagekit 0.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-23.36-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sat Oct 30 13:40:35 2010
ProcEnviron:
 SHELL=/bin/bash
 LANG=it_IT.utf8
 LANGUAGE=it_IT
SourcePackage: kpackagekit