I have a Lenovo Ideapad S10 which has been running 10.04 since April and I've been pretty happy with it. I imagine that I will install 10.10 on it tomorrow.
Not sure what the Ideapads use for wifi, but there is an issue with the iwlagn driver (what my Thinkpad X61 uses) that disables 802.11n modes. Not a problem if you're using not using 802.11n, but something to be aware of. Check the release notes for details.