Recently active topics in I want Sandy tagged with timezone

I live in Buenos Aires, which is usually at GMT-3. A recent federal law (which evidently hasn't been properly communicated around the world) reinstated daylight saving time in Argentina, so we are currently at GMT-2. I therefore configured my timezone as GMT-2, but whenever I set a reminder for, say, "in 15 minutes", it would get set for 4 hours and 15 minutes in the future. It then ocurred to me to use the timezone for Montevideo, Uruguay, which is at GMT-2, and this one works correctly. The only logical conclusion is that the behind-the-scenes functionality for the "GMT-2" timezone is wrong, as it seems to behave like "GMT+2" (two hours forward to GMT, plus two additional hours forward to GMT+2 makes up the 4 hour difference I'm seeing).

I created a reminder via twitter with a time and date, but wanted the reminder interval to be the day before instead of the usual 15 minutes.

I went to the website, selected the reminder and chose edit. (At this point the reminder looks fine - Tuesday 8th January at 09:45 GMT).

I changed the reminder interval and saved and the task ended up at 5:45pm PST (which makes no sense).

I tried to change the date back, but the reminder got moved to 1st August 2008 this time with a EST timezone.

My settings are Europe - London and DD/MM/YYYY (changing to US format dates helps a little, but I really don't want to change to a US timezone).