Yep. its happpened, PW6 with flashing red led after the display turns itself off accompanied by horrible high pitched 'whining' sound. Happening about every half hour now, have put an email into Panasonic customer care and the retailer where I bought it 3 months ago. I notice that this has happened to others with PW6's with varying degrees of 'customer care' from Panasonic so I'll keep you all posted how I get on. If you've got a PW6 that has'nt done it yet and you are getting near the end of your warranty it might be worth getting some assurances from Panasonic!