Sometimes I am reading a post... for a few minutes, go to reply... and when I go to hit submit.... it says I don't have permission... I refresh the forum... and I see I have been logged out.

What is the session time for being logged out? Only seems to happen here. Other forums (my own, and a couple others I visit - all phpbb - not sure what style this is?) - don't seem to have an issue. I can even go to other webpages and come back and find I am still logged on. But not the case for her. (I don't do the remember me, thing, I admit - but even still - don't do that on other forums either, and it seems to keep the cookie just fine!) Here it seems like if there's 5 minutes of inactivity it will log me out.