Duplicate contacts won't delete

[Colin Bland]

Binary package hint: evolution

I have recently imported my contacts from outlook and now have many duplicate entries. When I try to delete I get an error message and the duplicate will not delete. Message = Failed to delete, Other error
You are using Ubuntu 11.04 - the Natty Narwhal - released in April 2011 and supported until October 2012.
2.30.3-1ubuntu7.3 (evolution)

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: evolution 2.30.3-1ubuntu7.3
ProcVersionSignature: Ubuntu 2.6.35-28.50-generic-pae 2.6.35.11
Uname: Linux 2.6.35-28-generic-pae i686
Architecture: i386
Date: Thu Apr 14 11:25:34 2011
ExecutablePath: /usr/bin/evolution
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: evolution