Problems with Skype:

1. The "new user" sign up procedure is awful - you have to re-enter all the information (full name, username, two passwords and email address) each and every time you choose a username that is already in use, which is very likely! It took me about 6 attempts before I entered a username that wasn't in use! Although it's something you do only once, it's badly designed and extremely annoying and unnecessarily tedious.

2. It's appears impossible to edit the number of an existing contact - there is no "Edit" option, so you have to remove and add the contact again with the correct number.

3. You can't receive calls unless Skype is started, yet there is no option to start Skype on boot... it would be better if Skype were integrated into the Accounts and Presence control panel applets along with Google and Jabber

4. The "Edit Contact" screen is very weird - you have to exit the screen by pressing the window "X" icon when a "Cancel" button would have worked or at least give the window it's own icon in the Task bar, and the virtual keyboard "sliding up" stroke to enter shifted letters/numbers doesn't work.