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Open the file /usr/lib/openoffice/program/soffice (generally /opt/openoffice2/program/soffice on non-debian based machines) and comment ou... ING=1
#export SAL_ENABLE_FILE_LOCKING</code>
For some reason setting SAL_ENABLE_FILE_LOCKING=0 is not good enough to make this solution work although I would love to know why. A better solution is to make sure tht file locking it working