I just tried to purchase PerlDesk for installation on my server. They took my money but haven't provided the product/download info, despite repeated contacts via their helpdesk, contact form on website (both perldesk.com and logicnow.com), and finally, phone (disconnected!) Alex -- it might be a good idea, unless you have other info, to remove PerlDesk from your list of integration plugins (or at least remove the link to their website).
@terriz: might want to give at least a few days to a week for them to resolve the issue for you before declaring them defunct. On a side note, while the 877 number is reporting as "blocked" when I call (no idea what that means) the "international" 212 number went through ok just now.