When viewing a Customer list I have had users report "NotFoundError: Node was not found" OpenERP Client error box appearing. Also contained in error "http"//www.mysite.com/web/webclient/js?db=openerp:501".

Users are saying it happens about 1/4 of the time when they are browsing/filtering the Customers. (About 2000 records). They just close the error and retry so there doesn't seem to be anything wrong with any specific records.

Any idea what this error message even means?