Same thing happened with mine, AFTER it came back from Sony repaired. Sent it back again. Got to level 10 with copious amounts of gold licenses.
You might be fine, but warning signs are if it spontaneously turns itself off and blinks red. This happened to me a few times, each with a decreasing amount of playing time before it happened.
I decided to backup my entire utility as that's the only way to save my data, but as soon as I plugged in my HDD and went to find the option before I knew it my PS3 shut off after 2 minutes and wouldn't turn back on again (YLOD). All GT5 data gone and my disc stuck inside it.