[Evolution] how to persuade Iceape to use Evo

[michael <cs networkingnewsletter org uk>]

Since my Debian upgrade (or before?) it appears that clicking on a
mailto URL in Iceape doesn't open a new email using Evolution -- any
ideas on how to get this to happen? I've looked at Iceape prefs (nothing
set) and Gnome's preferred functions (set to Evolution) but can't see
what's wrong. More details below. Thank, Michael

Gnome v 2.14.3

michael ratty:~/.evolution/mail/imap/mccssmb2 imap icon manchester ac uk/folders/INBOX$ dpkg -l|grep -i -e 
evolution -e iceape
ii  evolution                        2.6.3-6
groupware suite with mail client and organizer
ii  evolution-common                 2.6.3-6
architecture independent files for Evolution
ii  evolution-data-server            1.6.3-5
evolution database backend server
ii  evolution-data-server-common     1.6.3-5
architecture independent files for Evolution Data Server
ii  evolution-dbg                    2.6.3-6
debugging symbols for Evolution
ii  evolution-plugins                2.6.3-6
standard plugins for Evolution
ii  iceape                           1.0.9-0etch1
The Iceape Internet Suite
ii  iceape-browser                   1.0.8-4
Iceape Navigator (Internet browser) and Composer
ii  iceape-chatzilla                 1.0.8-4
Iceape Chatzilla IRC client
ii  iceape-gnome-support             1.0.8-4
Gnome support for the Iceape Internet Suite
ii  iceape-mailnews                  1.0.8-4
Iceape Mail & Newsgroups and Address Book
ii  libcamel1.2-8                    1.6.3-5
The Evolution MIME message handling library
ii  libebook1.2-5                    1.6.3-5
Client library for evolution address books
rc  libebook8                        1.0.4-1
Client library for evolution address books
ii  libecal1.2-6                     1.6.3-5
Client library for evolution calendars
rc  libecal6                         1.0.4-1
Client library for evolution calendars
rc  libedata-book1                   1.0.4-1
Backend library for evolution address books
ii  libedata-book1.2-2               1.6.3-5
Backend library for evolution address books
ii  libedata-cal1.2-5                1.6.3-5
Backend library for evolution calendars
rc  libedata-cal5                    1.0.4-1
Backend library for evolution calendars
ii  libedataserver1.2-7              1.6.3-5
Utility library for evolution data servers
rc  libedataserver3                  1.0.4-1
Utily library for evolution data servers
ii  libedataserverui1.2-6            1.6.3-5
GUI utility library for evolution data servers
ii  libexchange-storage1.2-1         1.6.3-5
Backend library for evolution calendars
ii  mail-notification-evolution      3.0.dfsg.1-10+b1
evolution support for mail notification
ii  mozilla                          1.8+1.0.8-4
Transition package for the Iceape Internet Suite