I use a ruby script to update last.fm and here are it's results:
Hellogoodbye ; All Of Your Love ; ZOMBIES! ALIENS! VAMPIRES! DINOSAURS! ; 176 ; 2007-11-12 15:36:49
Post successful
Armor For Sleep ; Somebody Else's Arms ; Smile For Them ; 262 ; 2007-11-12 15:41:11
Post successful
New Found Glory ; Understatement ; Sticks And Stones ; 193 ; 2007-11-12 15:44:24
Post successful
Back Street Boys ; THE CALL ; Greatest Hits-Chapter One  ; 205 ; 2007-11-12 15:47:49
Post successful


Then, I check my dashboard and it still has the same number of played songs, and I get this message:
Some tracks you submitted have not been added to your profile for the following reason:
Spam protection triggered: You submitted a track dated earlier than your last submission.



Is there any way to make it work?