how do I free up disk space for updates?

[David M Laster]

Binary package hint: nautilus

I can't complete the downloads for Unbutu 9.04. it says I need to free up 502 mb of disk space.
And it tells me this also.
E: Unable to write mmap - msync (28 No space left on device)
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/nautilus
MediaBuild: Ubuntu 9.04 "Jaunty Jackalope" - Release i386 (20090420.1)
Package: nautilus 1:2.26.2-0ubuntu1
ProcEnviron:
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
Uname: Linux 2.6.28-11-generic i686

[Pedro Villavicencio (pedro)]

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We appreciate the difficulties you are facing, but it would make more sense to raise problems you are having in the support tracker at https://answers.launchpad.net/ubuntu if you are uncertain if they are bugs. For help on reporting bugs, see https://help.ubuntu.com/community/ReportingBugs#When%20not%20to%20file%20a%20bug.