[Bug?] Differnt buffers for same file

In XEmacs 21.0 "Corsican" [Lucid] (sparc-sun-solaris2.6) of Wed Aug 5 1998 on skrjabin configured using `configure --with-gcc --prefix=/home/clstaff/wedler/xemacs/xemacs-21.0-in --with-tooltalk --x-includes=/usr/local/include --x-libraries=/usr/local/lib --dynamic --with-xface --cflags=-O2' It happens quite often that I get different buffers for the same file in XEmacs-21.0. Here is an example from *Buffer List* x-symbol.el<3> 208735 Emacs-Lisp /home/clstaff/wedler/emacs/x-symbol/x-symbol.el x-symbol.el 208735 Emacs-Lisp /home/clstaff/wedler/emacs/x-symbol/x-symbol.el What's going on there? (I use efs and vc, below the contents of features) - Christoph `features' is a simple built-in variable. Value: (emacsbug x-symbol-nomule x-symbol-hooks bib-cite x-symbol-image reftex overlay latex tex byte-optimize advice advice-preload template info bytecomp byte-compile vc ediff-vers ediff-merg ediff-diff ediff-tbar ediff-wind ediff-help ediff-util ediff-mult ediff-init ediff texinfo makefile diff xrdb-mode outline finder finder-inf lisp-mnt picture dabbrev add-log rect supercite regi message-x gnus-msg lazy-shot sh-script skeleton executable efs-dired dired-faces dired-xemacs dired view-less view gnus-cite smiley annotations sort metamail bbdb-xemacs bbdb-com bbdb-hooks gnus-async gnus-score score-mode gnus-art browse-url mail-extr gnus-sum nndraft nnmh gnus-cache nnfolder nnml gnus-group gnus-undo nnmail bbdb-gnus bbdb t nntp nnoo gnus-start gnus-range gnus-spec gnus-int gnus-win gnus gnus-ems gnus-xmas gnus-util message messagexmas mail-abbrevs sendmail timezone nnheader nnheaderxm mail-utils mailheader hyper-apropos eldoc timer holidays rsz-minibuf diary-lib time appt cale! ndar x-font-lock tex-site session ff-paths ffap icomplete filladapt func-menu vc-hooks ediff-hook ztools zedit paren blink-paren gnuserv compile font disp-table font-lock cus-face x-symbol x-symbol-sgml x-symbol-tex x-symbol-mule jka-compr efs-x19\.15 efs-fnh passwd efs-ovwrt efs-cu efs-netrc efs-defun comint ring efs xemacs-devel-autoloads xemacs-base-autoloads w3-autoloads vm-autoloads view-process-autoloads vhdl-autoloads vc-autoloads tm-autoloads time-autoloads textools-autoloads text-modes-autoloads texinfo-autoloads supercite-autoloads strokes-autoloads speedbar-autoloads slider-autoloads sh-script-autoloads scheme-autoloads rmail-autoloads reftex-autoloads psgml-autoloads prog-modes-autoloads pcl-cvs-autoloads os-utils-autoloads net-utils-autoloads mule-base-autoloads mh-e-autoloads mailcrypt-autoloads mail-lib-autoloads leim-autoloads jde-autoloads ispell-autoloads ilisp-autoloads igrep-autoloads hm--html-menus-autoloads gnus-autoloads gnats-autoloads fsf-compat-autolo! ads frame-icon-autoloads footnote-autoloads eterm-autoloads egg-its-autoloads efs-autoloads edit-utils-autoloads ediff-autoloads edebug-autoloads dired-autoloads debug-autoloads cc-mode-autoloads calendar-autoloads calc-autoloads c-support-autoloads auctex-autoloads apel-autoloads Sun-autoloads Standard-autoloads efs-dump loadhist auto-show fontl-hooks x-iso8859-1 menubar-items x-menubar dragdrop mouse mode-motion itimer auto-save lisp-mode easymenu iso8859-1 page buff-menu lib-complete help-nomule derived frame text-props cus-start custom widget cl-extra mini-cl cl cl-19 packages backquote very-early-lisp tooltalk lucid-scrollbars cut-buffer lucid-menubars xface motif-dialogs x tty-frames tty toolbar native-sound scrollbar unix-processes multicast network-streams subprocesses menubar dbm md5 xemacs tiff png jpeg xpm cde lisp-float-type usg-unix-v dragdrop-api dialog devices window-system c-balloon-help)