New shells opening at / in screen?

[seanh]

Anyone know why this might be happening? Just recently, whenever I open a new 
shell in screen it starts in the root directory (/) instead of in my homedir. 
If I start a new shell outside of screen it starts in my homedir. I don't think 
there's anything unusual in my screenrc that would cause this, but here it is 
anyway:

defencoding UTF-8

# Status bar
hardstatus on
hardstatus alwayslastline
hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H "

# Lines of history to keep
defscrollback 5000

# Use the X Windows scrolling mechanism (scrollbar or whatever) instead of
# screen's awkward C-a [.#
termcapinfo xterm* ti@:te@

# When you open a text editor like nano in screen and then close it, the
# text may stay visible in your terminal. To fix this, put the following in
# your ~/.screenrc:
altscreen on

# Enable 256-color terminal
#term screen-256color
term xterm

# Turn welcome message off
startup_message off