I waited until today to try out the ibex on my laptop, because my wireless card from intel had some firmwire issues with the new linux kernel (2.6.27) which weren't fixed in 8.10 for the beta version.
A lot of people are downloading from the servers. Before you start, make sure you have configured a repository, which is close to you (go to system->administration->software sources->download from->other-> select best server). You might also want to try out apt-p2p. Read a tutorial here.
If you are ready to upgrade to intrepid, press alt-f2 (or open the terminal) and type
At first I had sound issues on my office computer, but killing and removing pulseaudio and switching to OSS worked (see forum post).