KPackageKit Software Update ERROR on Lucid 64 Bits

[Fernando]

Binary package hint: kpackagekit

After I tried to install RecordItNow from Synaptic, I can not update Lucid anymore.
I got the error message bellow from KpackageKit:
Error Type:
Error Value: coercing to Unicode: need string or buffer, exceptions.SystemError found
File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 2216, in
main()
File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 2213, in main
run(args, options.single)
File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 2175, in run
backend.dispatcher(args)
File : /usr/lib/python2.6/dist-packages/packagekit/backend.py, line 699, in dispatcher
self.dispatch_command(args[0], args[1:])
File : /usr/lib/python2.6/dist-packages/packagekit/backend.py, line 606, in dispatch_command
self.refresh_cache(force)
File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 202, in _locked_cache
func(*args, **kwargs)
File : /usr/share/PackageKit/helpers/apt/aptBackend.py, line 1498, in refresh_cache
format_string(error.message))
File : /usr/lib/python2.6/dist-packages/packagekit/backend.py, line 723, in format_string
txt = unicode(text, encoding, errors='replace')

I have two hard drives: one is master and other is slave. The master has Grub in dual boot with Windows 7.
Every time I choose on the Gub to boot Lucid I need to reboot 3 times or more to boot Lucid with success (I have Lucid in dual boot with Windows 7). But on Windows 7 it starts on the first time everytime.

On the every first time of the day that I boot Lucid I get the error message bellow:
Gaveup waiting for root device. Commom problems
- Boot Args (cat/proc/cmdline)
   - Check rootdelay = (did the system wait long enough?)
   - Check root = (did system wait for the right device?)
- Missing modules (cat/proc/modules ; ls/dev)
Alert! /dev/disk/by-uuid/7a4f112a-3848-4db3-bf9b-82fe46fe27cd does not exist. Dropping to a shell !
Busybox v1.13.3 (Ubuntu 1:1.13.3 - 1ubuntu11) build in shell (ash)
Enter help for a list of build in commands.
(initramfs) _

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: kpackagekit 0.5.4-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
Architecture: amd64
CheckboxSubmission: ec2a6ab87610604b973ea75ca4811ac7
CheckboxSystem: edda5d4f616ca792bf437989cb597002
Date: Mon May 31 08:38:16 2010
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: kpackagekit

[Mitch Towner (kermiac)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 546607, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.