i just signed into skype and it said it hasnt been certified but will still work, all i had to do was click enable
Skype released version 2.6 for Android devices today. It includes a number of improvements. Check it out.
Green screen is caused by the latest Skype update (ver 184.108.40.206)
Go back to skype version 220.127.116.11.
Do not update thrive to Android 3.2 it causes other problems, see thrive forums for more detail.