monitor locking process error

Dear Grass-users,Dear Grass-users,

      Have installed grass4.1.5 including update patch1 and Linux >slackware3

with kernel 1.2.13 in umsdos mode on a Compaq Presario 5522

after splitting my harddisk with fips.Run win95 on the other part.
Video chip set S3-Trio64
      Everything seems fine exept:
When I try d.mon start=x0 or d.mon select=x0 ,a monitor comes up but
then the following message:

$:Error - Could not complete locking process for monitor <x0>
Lockfile is /usr/local/grass/locks/darkstar/mon.4721494

Being a total novice to both Linux and Grass Im at a loss at this one.
Suspect a problem with memory or initab file.Help Help Help.....

Thanks in advance
Roland Muench - Landscape Architect
Darwin-Northern Territory-Australia
roland@taunet.net.au

Sorry for wasting space,
Managed to figure problem myself.Here's whats done the trick

Changed permission settings in directory /usr/local/grass/locks/ as root with

chmod a+w locks

Grass4.1 is working beaut now!! Cheers!!