Our silverware drawer is really rough and tight, it's heavy, and the slides are poor quality (shocker...) so I removed the drawer and checked it out. The lube they used turned to glue, black sticky crud, I cleaned it off best I could, lubed it with a light oil, but it was still rough.
So, I changed the slides with a Lightly-used drawer, cleaned those slides and lubed them up.
Works so nice now, worth the effort.
Here's how to do it:
https://picasaweb.google.com/Jimsue13/20120116Drawers?authuser=0&feat=directlink