You're just being spoiled. Make sure it has the latest & greatest updates for stuff that's running all the time (Windows, Flash, AV, etc.). Make sure to uninstall software you aren't using anymore.
If it seems a little sluggish, you may want to consider an OS reinstall (though that can be pretty painful, even if you have the original recovery disk). Another option to look at is perhaps upgrading RAM, or upgrading from a rotating disk to SSD.