IDK. Skype used to be reliable, but now it seems utterly useless. They took ages, about a year if I'm remembering right, to bring out Skype for their own Windows Mobile platform. I've personally hit a bug where the web interface allowed you to set a password that was incompatible with the app (too long I think).

The enterprise version isn't production ready for serious use. $FORTUNE_500 where I'm at really wanted to make it work - I suppose we pay for it on a per-seat basis along with the Office 365 product - but client disconnects with >100 users for an internal webinar on our internal network resulted in an embarassingly broken presentation and a decision to bail off to a different vendor's product.