Mine is an Aspire 5570Z. I tried 8.04 and 8.10. I couldn’t get the wireless
network to work. I worked on it for a few days and then gave up.

I installed Mandriva 2009. Everything worked for a while. It went unstable,
I reloaded Mandriva again. No wireless this time.

You should Google “Acer Aspire 7720 ubuntu”. There is a lot of info. It
looks like that isn’t an issue on that model.

I've installed Ubuntu 8.04 on my Acer 7720, as a dual boot. No real
problems. Wi-fi works OK but I haven't tried the web cam. I seem to
have more problems getting used to VISTA :-(

BTW got mine from Amazon UK, you might find prices lower. The 7720
comes with many different specs. Mine has 2GB ram & 120 GB HD.