This thread almost scared me.
i am also running the latest 2.60 firmware on my PS3 - but only because that's the only way i can get online via the PS3 in the PSN or online gaming.
i have had absolutely no problems with 2.60 or any previous firmware. My PS3 came preloaded with firmware 2.41 when i bought the new model 80GB last November.
Important thing to remember: NEVER upgrade your PS3's firmware online directly. Download the new firmware to your computer from Sony's site (check your PS3's region and go to the appropriate Sony region site for the right firmware) and then place in your USB drive (pendrive or whatever external USB storage device) and then use this to update.
I have read and heard myriads of problems with problems after updating firmware online. Just use a USB drive to update and you should be safe from possible corrupt firmware download during online live updating.