swap files reverting my work erroneously

I have noticed several times that swap files are created and remain after exiting vim properly.  When I start vim again later, I have been manually allowing the recover.  I was assuming that what is in the swap file was the same as in the buffer when I last exited. It took me a bit to figure out what was going on since this is a remote machine running vim in screen.

I just found that the swap file that I allowed vim to recover actually reverted my code.  The binary is operating correctly, but when I reviewed the code, it was back to half finished.

What is going on here?   For now, I am going to turn off swap files.

Thanks,
David

VIM - Vi IMproved 7.2 (2008 Aug 9, compiled Sep 28 2010 07:11:04)
Included patches: 1-330
Compiled by buildd@
Huge version with GTK2-GNOME GUI.  Features included (+) or not (-):
+arabic +autocmd +balloon_eval +browse ++builtin_terms +byte_offset +cindent
+clientserver +clipboard +cmdline_compl +cmdline_hist +cmdline_info +comments
+cryptv +cscope +cursorshape +dialog_con_gui +diff +digraphs +dnd -ebcdic
+emacs_tags +eval +ex_extra +extra_search +farsi +file_in_path +find_in_path
+float +folding -footer +fork() +gettext -hangul_input +iconv +insert_expand
+jumplist +keymap +langmap +libcall +linebreak +lispindent +listcmds +localmap
+menu +mksession +modify_fname +mouse +mouseshape +mouse_dec +mouse_gpm
-mouse_jsbterm +mouse_netterm -mouse_sysmouse +mouse_xterm +multi_byte
+multi_lang -mzscheme +netbeans_intg -osfiletype +path_extra +perl +postscript
+printer +profile +python +quickfix +reltime +rightleft +ruby +scrollbind
+signs +smartindent -sniff +startuptime +statusline -sun_workshop +syntax
+tag_binary +tag_old_static -tag_any_white +tcl +terminfo +termresponse
+textobjects +title +toolbar +user_commands +vertsplit +virtualedit +visual
+visualextra +viminfo +vreplace +wildignore +wildmenu +windows +writebackup
+X11 -xfontset +xim +xsmp_interact +xterm_clipboard -xterm_save
   system vimrc file: "$VIM/vimrc"
     user vimrc file: "$HOME/.vimrc"
      user exrc file: "$HOME/.exrc"
  system gvimrc file: "$VIM/gvimrc"
    user gvimrc file: "$HOME/.gvimrc"
    system menu file: "$VIMRUNTIME/menu.vim"
  fall-back for $VIM: "/usr/share/vim"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK  -pthread -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12   -DORBIT2=1 -pthread -D_REENTRANT -I/usr/include/libgnomeui-2.0 -I/usr/include/libart-2.0 -I/usr/include/gconf/2 -I/usr/include/gnome-keyring-1 -I/usr/include/libgnome-2.0 -I/usr/include/libbonoboui-2.0 -I/usr/include/libgnomecanvas-2.0 -I/usr/include/gtk-2.0 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/gnome-vfs-2.0 -I/usr/lib/gnome-vfs-2.0/include -I/usr/include/orbit-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libbonobo-2.0 -I/usr/include/bonobo-activation-2.0 -I/usr/include/libxml2 -I/usr/include/pango-1.0 -I/usr/include/gail-1.0 -I/usr/include/freetype2 -I/usr/include/atk-1.0 -I/usr/lib/gtk-2.0/include -I/usr/include/cairo -I/usr/include/gio-unix-2.0/ -I/usr/include/pixman-1 -I/usr/include/libpng12     -Wall -g -O2    -D_REENTRANT -D_GNU_SOURCE -DDEBIAN  -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64  -I/usr/lib/perl/5.10/CORE  -I/usr/include/python2.6 -pthread -I/usr/include/tcl8.4  -D_REENTRANT=1  -D_THREAD_SAFE=1  -D_LARGEFILE64_SOURCE=1  -I/usr/lib/ruby/1.8/i686-linux
Linking: gcc   -L. -Wl,-Bsymbolic-functions -rdynamic -Wl,-export-dynamic  -Wl,-E  -Wl,--as-needed -o vim   -pthread -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpng12 -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lgmodule-2.0 -lgthread-2.0 -lrt -lglib-2.0     -lgnomeui-2 -lbonoboui-2 -lgnomevfs-2 -lgnomecanvas-2 -lgnome-2 -lpopt -lbonobo-2 -lbonobo-activation -lORBit-2 -lart_lgpl_2 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lpng12 -lgconf-2 -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lrt -lglib-2.0   -lXt -lncurses -lselinux  -lacl -lgpm -Wl,-E  -fstack-protector -L/usr/local/lib  -L/usr/lib/perl/5.10/CORE -lperl -L/usr/lib/python2.6/config -lpython2.6 -lutil -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions -L/usr/lib -ltcl8.4 -lieee -lruby1.8 -lrt -lm  

--  David Ohlemacher Senior Software Engineer Scientific Solutions Inc.  99 Perimeter Rd Nashua New Hampshire 03063 603-880-3784  . o . . . o o o o