install spread libffcall1 mirror gcompris cvstrac Building the package cache... W: the release 'http://snapshot.debian.org/archive/debian/20110120T150156Z squeeze' has expired (expiry time 'Thu, 27 Jan 2011 14:17:50 UTC') W: the release 'http://snapshot.debian.org/archive/debian/20110120T150156Z sid' has expired (expiry time 'Thu, 27 Jan 2011 14:18:19 UTC') Initializing package resolver and worker... E: invalid version string '0.78_02-1' W: error while parsing a version for the package 'perl-modules' Scheduling requested actions... Resolving possible unmet dependencies... W: version string 'M17-1': first upstream character 'M' is not a digit W: version string 'M17-1': first upstream character 'M' is not a digit W: some solutions were dropped, you may want to increase the value of the 'cupt::resolver::max-solution-count' option E: unable to resolve dependencies, because of: python2.6-minimal 2.6.6-8+b1 breaks 'python-central (<< 0.6.14)' -> no solutions python-cairo 1.2.0-1 depends on 'python-central (>= 0.5)' -> installed python-central 0.5.12 gcompris 9.3-1 depends on 'python-cairo' -> installed python-cairo 1.2.0-1 python-minimal 2.6.6-3+squeeze5 depends on 'python2.6-minimal (>= 2.6.6-1~)' -> installed python2.6-minimal 2.6.6-8+b1 python 2.6.6-3+squeeze5 depends on 'python-minimal (= 2.6.6-3+squeeze5)' -> installed python-minimal 2.6.6-3+squeeze5 python-central 0.5.12 depends on 'python (>= 2.3.5-7)' -> installed python 2.6.6-3+squeeze5 python-cairo 1.2.0-1 depends on 'python-central (>= 0.5)' -> installed python-central 0.5.12 gcompris 9.3-1 depends on 'python-cairo' -> installed python-cairo 1.2.0-1 E: error performing the command 'install'