Eric Caoili on Gamasutra writes:
"Viacom said in its fourth quarter earnings call that Rock Band 2 sales were solid with 2 million units sold since the music game's September 2008 launch, but admitted that the sales are still weaker than expected.
The media conglomerate attributed Rock Band 2's underperformance to a sudden drop in retail spending in the last two months of 2008, according to a report from digital content business site PaidContent."