My beloved Sony Vaio TR3, discussed above, now has a problem with the space bar. Sometimes it works, more often it does not. I called a computer repair guy,who is not an expert on laptops - and thinks it is non repairable. Do I really have to return it to Costco for exchange? I've got about 5 days on their 6month, no questions asked warranty - but I truly hate to give up my computer that is all configured just the way I likeit.