I'm now fending off jetlag from hell in a chilly East London internet cafe, but back in Las Vegas it's still all go at CES.

Skype took the platform at the Consumer Electronics Show today to explain why there's no version of Skype for downloading to all types of mobile phone. The reason is pretty simple, and won't come as a suprise to anyone who's had a mobile bill recently: carrier charges are still far too high to support it.

If you've got a mobile with an inexpensive data connection, it would make perfect sense to use Skype for making calls. But the bit about "inexpensive data connection" is, as yet, as rare as hen's teeth on a flying pig.

Back in November Skype unveiled a version of the software that runs on a Nokia phone using 3's 3G mobile phone network, giving unlimited Skype calls for a flat £5 a month. Skype versions for other mobiles were expected to follow quickly, but other carriers haven't played ball, and have failed to cough up the appropriate low-fee or flat-fee mobile data packages.

Still, the success of the Skype/Nokia/3 launch means that other mobile operators are under pressure to rethink their data pricing strategies. Perhaps at next year's CES we'll see some progress...