Just updated my MacBookPro 17' A1229 to 10.6.7. Fans going full 6000 rpm on startup. Current temp is 36°. No processor activity at all. Istat says 90% idle. Also have SMC fan control installed and set to run at 2000 but it is doing nothing. Cannot get fans to slow down at all. Have reset SMC and also PRAM but no difference. Going to try hardware test when I am back in work tomorrow. Anybody got any other ideas. Is this an update issue?