I have 3 machines with Skype (two different users), none of these will connect to make calls via my KSC connection. Web browsing FTP etc is working fine.

I don't have another connection to try so is it just me?

I have the same porblem, its damm annoying as I want to make a few phone calls............

http://heartbeat.skype.com/2010/12/problems_signing_in_to_skype_1.html

Thanks, I can stop looking for the virus / trojan / worm

Skype network is down worldwide since yesterday evening:

http://www.ethailand.com/news/skype-suffers-crashes-47379.html

May be a carry over from the major problem they had earlier today.

David

Skype downtime today

Earlier today, we noticed that the number of people online on Skype was falling, which wasn’t typical or expected, so we began to investigate.

Skype isn’t a network like a conventional phone or IM network – instead, it relies on millions of individual connections between computers and phones to keep things up and running. Some of these computers are what we call ‘supernodes’ – they act a bit like phone directories for Skype. If you want to talk to someone, and your Skype app can’t find them immediately (for example, because they’re connecting from a different location or from a different device) your computer or phone will first try to find a supernode to figure out how to reach them.

Under normal circumstances, there are a large number of supernodes available. Unfortunately, today, many of them were taken offline by a problem affecting some versions of Skype. As Skype relies on being able to maintain contact with supernodes, it may appear offline for some of you.

What are we doing to help? Our engineers are creating new ‘mega-supernodes’ as fast as they can, which should gradually return things to normal. This may take a few hours, and we sincerely apologise for the disruption to your conversations. Some features, like group video calling, may take longer to return to normal.

Enterprise products including Skype Connect and Skype Manager continue to function normally.

Customers using the enterprise version of Skype for Windows may still experience delays signing in.

Stay tuned to @skype on Twitter for the latest updates on the situation – and many thanks for your continued patience in the meantime.

Just received an email with an apology and a credit voucher from Skype over this matter.

Thanks Skype!

Seems to me like, this is the first time Skype has ever responded directly to it's customers over problems it caused.

See this Skype blog for a post-morton on the Skype outage:

http://blogs.skype.com/en/2010/12/