The more I read about snapshots the more confused I get. If you have a number of snapshots on a virtual machine and you are satisfied nothing went wrong and you want to commit the snapshots so they are gone do you use "revert" or do you "delete" them or what?
IMO instead of "Delete" and "Delete All" the buttons should be named "Commit" and "Commit All". This would make things clearer.
EDIT: Be careful with "Delete All" if you are running ESX(i) 4 prior to Update 2. With multiple snapshots, you may need a lot of free disk space for this.