How do I make Skype use the default Ubuntu notify-osd to display notifications (incoming messages, users connecting, etc.) instead of the Skype's own "ugly" message box?
then go to skype options, notification settings, find event you want to edit (for example, online contact notification), check "Execute following script" and insert
This worked for me. You can do this with other notifications as well.
There is a tool called Skype-wrapper that uses native notification system of Ubuntu.
To install Skype-wrapper, enter the following commands in a terminal.
Note: The above PPA, at the time of writing, has packages for 10.10, 11.04, 11.10 and 12.04 only.
After installing skype-wrapper, open Skype and sign in. Then, open skype-wrapper and allow it to use Skype by clicking the 'Yes' button. Select the option "Remember this selection" if you don't want to repeat this step everytime you use skype-wrapper.
After authorizing skype-wrapper to use Skype, you will have both native notifications and Skype's actual notifications. To disable Skype's notifications, open Skype and go to options > notifications and disable all of the available notification types. Disabling notifications inside Skype doesn't disable skype-wrapper's native notifications.
Useful link: How to add Skype to the Ubuntu messaging-menu
Another work-around: install Pidgin, make sure Pidgin has a Skype account, then everything will go directly to notify-osd. (Downside: you have to then have both Pidgin and Skype open.)
Integration instructions here.