"Plugins I'd like to see: up-to-date Java, up-to-date Flash, real media, windows media, ogg, divx, mpeg2, quicktime, svg, mathml."
I think for most of the video related ones it might be best to wait for Cineroma to be released and add a plugin front end to that. For Java there's always Kaffe, and the Apache group are looking to put together an open source JVM too.
Of course people have been asking for plugins like the above for years now, and there's still no sign of them appearing (although there is of course an existing SVG plugin).
"By optimising sites sites for Firefox, I meant that web designers are starting to write W3C-konform code wich uses features of the W3C specification wich only Firefox supports properly yet, or that they only test their sites on Firefox."
That should be fine then, Firefox is one of the browsers used to check Oregano 3's handling of sites. Although Firefox is not always right. I was also under the impression that Opera was quite good on the whole standards compliance thing, so any sites designed for Firefox shouldn't be a problem for Opera.
"Sorry, I have had a very long day (working for 16 hours straight) and am too tired now to discuss this further. I need a holiday."
That sounds fun... I've not needed to put in any days that long for a while now. Altho. in the last 12 months I think my longest work day was about 32 hours. Hopefully I won't have to repeat that for at least another year.