Hi Oouc - the reason why talking about flaws or bugs in a thread about virus's is off-topic is because these are different things.

A virus is a malicious application intended to compromise a computer, whereas a bug is a legitimate application behaving in unintended ways through programmatical errors.

You would be better off posting your comments about the issues with skype in a more relavent thread, as you are most likely to get better suggestions or help.