What really gets me about this whole thing: these incompetent manufacturers of electronic devices with clocks. The rules have remained unchanged for many years, but even current devices rarely have automatic adjustment. No, you don't need a radio time signal receiver for something like this, a very simple algorithm would suffice. But what do the manufacturers do? If they're being generous, they at least build in a switch for manual adjustment of winter/summer time. Most of them, however, still demand that the customer manually adjust the time themselves. Then there are these ridiculous devices where you can't even set the hours separately, but have to run the whole time forward through 23 hours instead of simply going back one hour.
The manufacturers of overpriced consumer products clearly have never heard of usability...
And mobile phone manufacturers especially get on my nerves—they already get the local time transmitted via cellular networks, but still demand manual time adjustment. Even stupid video recorder manufacturers at least have the option to fetch the time from the video text, but mobile phone manufacturers are fundamentally too incompetent for that.
Oh, and PDA manufacturers whose PDAs don't do automatic time adjustment even though the time zone has to be configured in the device anyway (and therefore the rules for automatic adjustment are unquestionably established) deserve to be pelted with their instruction manuals.