I was trying to create a new topic regarding resolution requirement for OCR, for which I wanted to upload a few samples as attachment. When I tried to attach the first sample, I got the following error: "The file is too big, maximum allowed size is 512 KiB." Each of my three samples is below 2 Mb, so I suggest you increase the default phpBB max attachment size to 2 Mb (which is the default max upload size in PHP anyway).
If that's not possible, please suggest some other way I can make these samples available. I could upload to RapidShare and post link here, but the files are likely to disappear if they are not downloaded for a while.