Today I noticed that when you have a chat window open from Skype, Skype uses about 20% CPU. I guess this is a way too much for a chat window. After some research, I came to the following link. There it is states that by default in the actual Linux version animated emoticons are disabled, because there is an issue with CPU performance.
"By default, animated emoticons are currently disabled due to some CPU usage concerns, however you can re-enable them in the Options dialog." - http://share.skype.com/sites/linux/2007/06/skype_for_linux_14_beta.html
And really just by deactivating (Options -> Chat -> Show animated Emoticons) Skype stops using this much CPU Time. I hope they try to get rid of this issue, as I really like this little funny emoticons. (beer) (party)…
Skype 184.108.40.206 - released on 10th of August is available for Linux and fixes the discussed issue.