I bought an LCD photo thingy at Christmas from Tesco, and it works OK but sometimes it just sticks. It's meant to refresh every 30 seconds or so, but sometimes it just stops on one picture (which isn't always the same).

If I unplug and replug it, then it will be OK again maybe for many hours. Other times it stops after 10 minutes.

I resized all my images so that they were the correct size for the frame which reduces the filesize massively in case there was something wrong there, but it still does it.

Should I take it back, or is this kind of thing common with other frames as well?