Sorry if this is a known issue, but a quick search of the FAQ and forums didn't turn up anything...
I've got a "continuous mix" of an album that runs 76 min. plus. It's included with the "normal" breakout of tracks in the iTunes album download. The album is Fahrenheit Project Part Seven; and the track is named "Fahrenheit Project Part 7 (continuous mix)". Doh!
I've played it a couple of times. The plays show in iTunes, but not on Last.fm.
Just submitted it again, along with the rest of the day's iPod plays. Last.fm scrobbler listed it to be scrobbled, but it didn't make it to the website.
The band name "Various Artists" is one of the forbidden names. That could be why it's not scrobbling, though apparently some people have done it.
Improve your view of Last.fm - add some User Scripts. Did I hear that right? Mondegreens - for the misheard word. Like Odds? Can't get better than Even Odds!
Speak your truth quietly and clearly; and listen to others, even to the dull and the ignorant; they too have their story.
76 min. track not scrobbling