emacs cvs loses the start of the buffer

[Robert]

In the latest cvs, if I move down a file and then try to move back up using
scroll-up I'm getting beginning-of-buffer signalled before I can see the
start of the buffer.

C-x l gives, when at line 1 in the window 'Page has 53221 lines (11 +
53210)', but scroll-up refuses to move. Seems to happen in all files I've
tried so far, backspace in gnus is afflicted with the same error

previous-line enables me to get to the real beginning of the buffer

In GNU Emacs 21.3.50.3 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2002-12-26 on jailhouse.chezmarshall.freeserve.co.uk
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: en_GB
  value of $LC_CTYPE: en_GB
  value of $LC_MESSAGES: en_GB
  value of $LC_MONETARY: en_GB
  value of $LC_NUMERIC: en_GB
  value of $LC_TIME: en_GB
  value of $LANG: en_GB
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

running in place rather than installed

R
-- 
Robert Marshall