natim - 3:13 pm on Nov 15, 2003 (gmt 0)

I have 15 sites all top 10 many top 5 and 6 #1's all gone. They are registered with godaddy but not hosted there. This happened since 11pm eastern last night. Was this a massive update with new algo's? Sites are not new, have tons of quality links and have consistently held those positions.