The Shapeoko Forum

I think this has happened to me a couple of times. I will write some text and if like more than 10-15min pass then I hit submit I find it has logged me off - the post is not posted and I lose my text and also have to upload pics again. I could have not clicked the "remember me to login automatically" box when logging in but I thought that was just for when you browse away from the forum and come back. I totally get that it should log us off after a couple of hours but it seems like the setting is a bit low?
Also just curious, I have seen these phpBB forums for a couple of different projects now. Pretty sweet. So its freeware but then if there are a lot of pics on their servers they start charging the owner, is that the deal?

PhpBB is free and open source, not freeware. There are no limits to the number of posts or attachments or mods or anything like that. I think they make their money from support, and from selling hosted solutions (where they install and maintain the forum for you, on their servers).