[xwiki-users] Filesystem attachment store location

Hi. I was being stomped for quite a while why after I restart Apache Tomcat, the attachments configured to be stored on the filesystem could no longer be found by xwiki. But today I found out that the effective directory where xwiki holds the files is created relative to the folder from which Tomcat was started via the bin/startup.sh script. For example, if I start Tomcat from /opt/apache-tomcat-6.0.32, xwiki's attachments directory is /opt/apache-tomcat-6.0.32/data; if I start Tomcat from /opt/apache-tomcat-6.0.32/bin, xwiki's attachments directory is /opt/apache-tomcat-6.0.32/bin/data, and so on. Is there some way to configure xwiki's attachments directory? Is this the expected/desired behaviour? Am I doing something wrong? Thanks. -- Fita Adrian