Crikey, i never even thought of carb icing, and my bike does suffer from it too.
Even with the carb heater circuit cleared out, once it hits a certain frosty temperature (normally between zero a 5 degrees) my bike will start misbehaving, as it did in the very first winter i rode it. It played up 3 days in a row, one mile from my home and i had to keep stopping the bike in exactly the same place, but after getting it going again i limped the bike to my mechanics where he guessed carb icing and also cleaned the circuit for me and as Gnasher suggests it was blocked.
There are expensive lotions and potions out there to help with this problem, but now i buy a 5 litre container of 99% Isopropyl Alcohol, and have found that just 200ml per full tank of fuel keeps the problem away, without any other side effects whatsoever. I've had the bike 12 or 13 years now.
It only costs just over £15 for 25 tanks worth, so will easily get you through winter if you ride all year round. (all barring snow and ice, i have my limits)
I'm guessing that you don't hear about this issue as much because a lot of people don't use the bike in these much lower temperatures, which is fair enough if you have alternative transport, but i don't so i just deal with it.
In the colder weather too though, it is worth using the choke to warm up the bike properly for 2 or 3 minutes before you head off, i try to aim for around the 2000rpm mark, which isn't so offensive to upset the neighbours.