Since there's no section for the Nokia C6 yet, I'm posting this here since the C6 is pretty close to the 5800 express music.
I just downloaded and installed Opera Mini 5.1 from the OVI store. Works perfectly (much faster than Opera Mobile 10). The only thing is, the icon for opera mini in my apps folder is very pixelated (as opposed to the one for opera mobile which is just fine).
I tried to uninstall and reinstall opera mini, to no avail.
Anyone else having this problem and if so, how do you solve it? Can you replace the icon with another one ?