ftpfs timeout

[Willie McKemie <mckemie spamcop net>]

My mc:
GNU Midnight Commander 4.6.1
Virtual File System: tarfs, extfs, cpiofs, ftpfs, fish, smbfs
With builtin Editor
Using system-installed S-Lang library with terminfo database
With subshell support as default
With support for background operations
With mouse support on xterm and Linux console
With internationalization support
With multiple codepages support

seems to have a timeout on inactive ftpfs connections.  Where might I 
adjust that timeout threshold?

-- 
Willie, ONWARD!  Through the fog!
http://counter.li.org Linux registered user #228836 since 1995
Debian3.1/GNU/Linux system uptime  140 days 16 hours 28 minutes