crwdns2934241:0crwdne2934241:0 natalia47

crwdns2934249:0crwdne2934249:0:

Are you running Snow Leopard?  It happened to me once as well not long after I did a clean install of Snow Leopard on my C2D Macbook.  A reboot fixed it for me.  There's a thread about people having the same problem and some of them have had to reset the SMC/PRAM to get Bluetooth back: http://discussions.apple.com/thread.jspa?threadID=2139638&tstart=0