Akhilesh told me that whenever he logs in to the instance in Framework only mode, the following message is diaplsyed: "Low level logging (debug) is turned on. The cause is described in Metalink note 390139.1:
1. Logging turned on at profile level
FND: Debug Log Enabled = Yes
FND: Debug Log Level = Statement
FND: Diagnostics = Yes
2. Logging turned on on the OS - $IAS_ORACLE_HOME/Apache/Jserv/etc/jserv.properties
Commenting out these 4 parameters removed the problem.