Forwarding bug http://bugs.debian.org/636126

What steps will reproduce the problem?
1. create skype account on pidgin
2. shutdown pidgin and skype
3. uninstall skype client or rename /usr/bin/skype
4. start pidgin

What is the expected output? What do you see instead?
Pidgin crashes. Debug output says:
[...]
(12:44:04) skype: Should I start Skype?
(12:44:04) skype: Yes, start Skype
(12:44:04) skype: Could not start skype: `�
Pidgin 2.9.0 has segfaulted and attempted to dump a core file.
[...]

What version of the plugin are you using? On what operating system?
pidgin-skype 20110407+svn612+dfsg-1

Please provide any additional information below.
Hi Eion, debian/ubuntu packages already say that skype client is needed in long 
description and in /usr/share/doc/pidgin-skype/README.Debian file.
What about adding a popup/message somewhere that reminds that?
Thanks.