Yeah? Have you ever had problems with downtime? And don't you think Filezilla is logging out too often? I have to reconnect every 5 mins when I'm using the FTP.
Never had problems with filezilla, you might want to check your settings maybe the keep alive is not set or a low timeout. It also depends on the settings of the ftp-server you are logging in to, maybe they have a strict timeout policy.
You have it set to disconnect after a certain amount of idle time, then! What's the point of idleing that long? All you do is hit CTRL+R and it reconnects in like 0.5 seconds - not that inconvenient, really! As a free FTP program goes, it's pretty good.... although I do miss FlashFXP when I'm using Filezilla!