2 DisappointingCeliaFan | 14/05/2011 | See all CeliaFan's reviews (20)I recently purchased a Pentax K-x DSLR and thought this card would be ideal to get started with. A good price and chunky memory? Sold to the woman with the shiny new camera!All went well to start with. The write-speed was good, it uploaded to my laptop nice and quickly; we had a happy relationship for about 2 months...and then something went horribly wrong.One day, 45 photographs vanished from my camera. The folder was there - but there wasn't a single file to be seen. I took some more photos to check, and they stayed put. Chalking it up to some schoolgirl error, I carried on as normal the following day.I took about 50 photos of some swallows. Every single one of them disappeared. I checked the card lock and it was in the right position. I re-formatted it. I tried again...epic card fail.Now I'm using an ancient 128MB card until I receive the SanDisk card I've just ordered. It's quite possible that I simply got unlucky and bought a duff card, but I won't be buying Lexar cards again...just in case.