Recently posted on the PlayStation Blog, Patrick Seybold had this to say regarding the issues on Firmware 3.0:
“SCEA is aware of reports that PS3 owners are experiencing isolated issues with their PS3 system since installing the most recent system software update (v3.00). Rest assured that we are looking into the matter and will provide an update here as soon as possible. We apologize for any inconvenience, as it’s our mission to deliver the best consumer experience on all PlayStation platforms.”
Hopefully the issues will be fixed soon and quickly.