But it doesn't seem to be working. I've installed Debain testing (squeeze) with iceweasel & icedove. Icedove comes configured to open http & https links with x-www-browser which is, in turn, pointed to Iceweasel (firefox); so this should work. I have also tried changing the network.protocol-handler.app.http to iceweasel, but that doesn't work either.
Any suggestions?