I just installed Ubuntu 11.10 on my computer that has Windows7 on it as well.
I was first trying to upload Chromium and I got this error:
Package dependencies cannot be resolved
This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time
This came up when I was trying to download Chromium, Skype and VLC, though there was no problem downloading Geany or 7zip.
Once again, I haven't done anything before on Ubuntu.