I suffer from SAD (seasonal affective disorder). Here's some info on SAD taken from the "outside-in" website: Its started to kick in over the last few weeks. Any other sufferers on the boards? It's a very interesting disorder from a medical/pyschological point of view, and there are some pretty weird ways to treat it, the most recognised of which is light therapy. I have a large white 'box' that sits on my desk and gives off very bright daylight-like light (mine has an apple sticker on it too!). The difference its made is quite noticeable! My light box gives off 10,000 lux on full and at short range (20cm). A normal living room at midday might be as low as 100lux. Here's a chart (should be updated in real time) of what the daylight's like in the uk at the moment - as you should see over today, the light levels are rather low, despite the fact there's not a cloud in the sky and its a perfectly clear day: edit: sorry, i should have mentioned that the dotted line indicates minimum required levels to combat SAD. Quite why i'm posting all this i don't know, but some of you may find it helpful since its a disorder that is often put down to other things and not that commonly diagnosed in the uk despite the fact that an estimated 10% of the population of northern europe suffer from it to some extent. So if you're feeling low, tired, lethargic etc, look into it! I think i've been a sufferer for about 3 years but it wasn't properly diagnosed until earlier this year. more info here for those of you who are interested.