I've just installed Ubuntu Linux 11.04, because Windows kept crashing,
and we didn't get a backup disc with our PC.

There are two problems so far: the 'Time and Date' dialogue box will
not appear, Ubuntu's website is useless as it says you need to get the
box up first to enable time setting... obviously they're staffed by a
typical incompetence of engineers, telling you their product does
something when it plainly doesn't.

Also only USB mice will work, ones that use the proper mouse port will
only move the cursor vertically... how incompetent can you get?