I'm still not far into the main quest so Sahloknir, Mirmulnir and Paarthurnax are the only named dragons I've yet run into. What puzzles me is that http://www.uesp.net/wiki/Skyrim:Mirmulnir]uesp.net states that Mirmulnir has no spoken dialogue[/url], as well as http://www.uesp.net/wiki/Skyrim:Sahloknir, yet they had quite some stuff to tell while being fought. Is the uesp wrong or does the English version have no spoken dialogue for dragons?

Thanks in advance!

I don't know where you got that info but uesp clearly states they do talk. http://www.uesp.net/wiki/Skyrim:Mirmulnir