Should this error be of any concern?

12:12:59,919 INFO [PermIndex] [RBPM] permission Index directory: /tmp/permindex
12:13:00,104 ERROR [PermIndex] [RBPM] Unrecoverable error during creation of Permission Index
com.netiq.cis.spi.IndexException: java.io.IOException: Failed to list contents of /tmp/permindex
at com.netiq.cis.permindex.PermissionIndex.initialize (PermissionIndex.java:98)
at com.netiq.idm.cis.PermIndex.initialize(PermIndex.j ava:260)
at com.netiq.idm.cis.PermIndex.access$100(PermIndex.j ava:71)
at com.netiq.idm.cis.PermIndex$1.run(PermIndex.java:1 35)
at java.util.concurrent.ThreadPoolExecutor.runWorker( Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Failed to list contents of /tmp/permindex
at org.apache.commons.io.FileUtils.cleanDirectory(Fil eUtils.java:1393)
at com.netiq.cis.permindex.PermissionIndex.initialize (PermissionIndex.java:96)
... 6 more