I'm a bit mad actually.
I bought a cheap and small camera from an ebay store that I actually trust, a lovely Olympus AF10 with flash that I planned to have always in my bag, and all the test rolls I've been trying with it were, apparently, "not exposed" (including the ones I took at Primavera Sound, which, grrrr).
The thing is that the lab I've been going for the negatives has been returning me quite a few of my rolls completely blurred and saying they were "not exposed" which, ok, if it happens once, not a problem, I might have made a mistake, but when it happens like 5 times and with different cameras... well, now something is going on.
I wasn't sure if the problem was the camera, the rolls I've been using, me, or them... so I decided to change labs, just in case. I went today for the negatives at the new place and they didn't have a single problem. What's more, they actually did a better job, even with the packaging and the storage. Once is not a pattern, I know, but, right now I think I'll work with them and see what happens.
*Washed Out - Don't Give Up