Ubuntu :: How To Downgrade Nautilus

Ubuntu 10.04 has nautilus 2.31, which has a couple of features i don't like:space bar doesn't open multiple folders, like ENTER does. Sometimes it's more comfortable to hit the space bar instead of the enter key. I could do this in fomer versions (ubuntu 8.10 and 9.04).when i copy folders or files which are called the same as the ones in the destination folder, the prompt to replace/merge has the options accept and skip, and if i want to do the same every time the soincidence of names takes place, y have to first tick "always do the same" and then click "replace", for example. In former versions of nautilus/ubuntu (8.10, 9.04 at least) the prompt had buttons replace-replace all-skip-skip all, so a single click could do the job.How can i go back to those versions of nautilus, while still using ubuntu 10.04?