It's about time for a first post here and I thought I could tell you a bit about what version I use, how I use it and also point you towards a couple of resources I frequently read and use, if you don't know them already.
I have LaTeX2e on Kubuntu 10.04 installed and I use it to write my PhD thesis, prepare lectures (with beamer), and create conference papers. The latter is slightly challenging since I haven't found a suitable class/package yet to create professional looking posters. I know of
baposter and
a0poster, but both require too many modifications to be of much use to me. So for now, I try to get around the problem by combining
TikZ and the minipage environment, but it's not the most effective solution... For my PhD thesis I use an older and in parts considerably modified version of
classicthesis, in combination with a makefile which is very useful. The biggest challenge in creating professional looking lecture slides lies in placing images with precision; I use quite a lot of them to illustrate specific (cognitive) theories and phenomenon. Two-column slides can also be a bit inflexible to work with. Other than that, I can't find much to complain about (okay, the available themes aren't always the most beautiful...)
Useful resources? Well,
LaTeX wikibook is really helpful and
The Tex Community Aggregator helps you keep updated with LaTeX related news.
Now your turn :)