1) Where have the sound effects for lock and unlock gone? KALICK! I miss that. It was an obvious cue that things were locked.
2) If you multiple select more than one item and right click delete - only one item a time is send to the trash
We haven't added the sounds yet, I'll file a bug report to make sure we bring this back along with more visual cues that 1Password is locked.
As for the bulk delete, that's a known issue, we're working on fixing it!