I'm trying!

Today, after browsing a friend's photos online, I tried to upload photos from our trip to Florida into an online gallery. Unfortunately there were loads of errors and not one (!) of the photos were viewable. :( I have since tried again and also to email photos and each time they were corrupted. I don't know what the problem is, but needless to say I am not very happy about it - and also a little nervous that something sinister might be going on with my computer!