synaptic package manager error message since gutsy update 11 april

Binary package hint: yelp

gutsy

E: /var/cache/apt/archives/liblink-grammar4_4.2.2-4ubuntu0.7.10.1_i386.deb: Verification on package /var/cache/apt/archives/liblink-grammar4_4.2.2-4ubuntu0.7.10.1_i386.deb failed!
E: /var/cache/apt/archives/liblockfile1_1.06.2_i386.deb: Verification on package /var/cache/apt/archives/liblockfile1_1.06.2_i386.deb failed!
E: /var/cache/apt/archives/libversion-perl_1%3a0.7203-1_i386.deb: Verification on package /var/cache/apt/archives/libversion-perl_1%3a0.7203-1_i386.deb failed!
E: /var/cache/apt/archives/libnetaddr-ip-perl_4.007+dfsg-1_i386.deb: Verification on package /var/cache/apt/archives/libnetaddr-ip-perl_4.007+dfsg-1_i386.deb failed!
E: /var/cache/apt/archives/libnet-ip-perl_1.25-2_all.deb: Verification on package /var/cache/apt/archives/libnet-ip-perl_1.25-2_all.deb failed!
E: /var/cache/apt/archives/libnet-dns-perl_0.60-1ubuntu0.1_i386.deb: Verification on package /var/cache/apt/archives/libnet-dns-perl_0.60-1ubuntu0.1_i386.deb failed!
E: /var/cache/apt/archives/libmail-spf-perl_2.005-0ubuntu1_all.deb: Verification on package /var/cache/apt/archives/libmail-spf-perl_2.005-0ubuntu1_all.deb failed!
E: /var/cache/apt/archives/libneon25_0.25.5.dfsg-6build1_i386.deb: Verification on package /var/cache/apt/archives/libneon25_0.25.5.dfsg-6build1_i386.deb failed!
E: /var/cache/apt/archives/libogg-vorbis-header-perl_0.03-1_i386.deb: Verification on package /var/cache/apt/archives/libogg-vorbis-header-perl_0.03-1_i386.deb failed!
E: /var/cache/apt/archives/libsmokeqt1_4%3a3.5.7-1ubuntu4_i386.deb: Verification on package /var/cache/apt/archives/libsmokeqt1_4%3a3.5.7-1ubuntu4_i386.deb failed!
E: /var/cache/apt/archives/libqt0-ruby1.8_4%3a3.5.7-1ubuntu4_i386.deb: Verification on package /var/cache/apt/archives/libqt0-ruby1.8_4%3a3.5.7-1ubuntu4_i386.deb failed!
E: /var/cache/apt/archives/libraw1394-dev_1.2.1-3build1_i386.deb: Verification on package /var/cache/apt/archives/libraw1394-dev_1.2.1-3build1_i386.deb failed!

ProblemType: Bug
Architecture: i386
Date: Mon Apr 14 11:58:35 2008
DistroRelease: Ubuntu 7.10
ExecutablePath: /usr/bin/yelp
NonfreeKernelModules: nvidia
Package: yelp 2.20.0-0ubuntu3
PackageArchitecture: i386
ProcCmdline: yelp
ProcCwd: /home/mama
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: yelp
Uname: Linux ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux