No, it was not the compressor pulley bearing, I may have not stated the problem well enough; it was the idler pulley bearing on the belt tensioner that went bad on me, seized, and melted the belt.

There's no noise in front right now.

__________________
Thank You!
Fred
2009 ML350
2004 SL600
2004 SL500
1996 SL600
2002 SLK32
2005 CLK320 cabrio
2003 ML350
1997 C280 Sport