I made ~/Pictures folder and UDF. Then, I moved ~/Pictures to ~/Pictures.bla. That generated:
2010-03-22 17:18:31,840 - ubuntuone.SyncDaemon.AncestorsINotProc - INFO - Got MOVED_FROM on path '/home/nessita/Pictures', unsubscribing udf <UDF id '6ade791c-d80c-4f9c-b911-22bb0af7c8c5', real path '/home/nessita/Pictures'>
2010-03-22 17:18:31,840 - ubuntuone.SyncDaemon.VM - INFO - unsubscribe_udf: '6ade791c-d80c-4f9c-b911-22bb0af7c8c5'
2010-03-22 17:18:31,842 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: VM_UDF_UNSUBSCRIBED, args:(<UDF id '6ade791c-d80c-4f9c-b911-22bb0af7c8c5', real path '/home/nessita/Pictures'>,), kw:{}
But when restarting the SD it entered of an endless loop of:
2010-03-22 17:24:34,021 - ubuntuone.SyncDaemon.local_rescan - INFO - scan dir: '/home/nessita/Pictures' mdid: 9a39116e-bc57-4a60-8198-e0bb47d51159
2010-03-22 17:24:34,024 - ubuntuone.SyncDaemon.local_rescan - DEBUG - The received path is not in disk: path '/home/nessita/Pictures' mdid 9a39116e-bc57-4a60-8198-e0bb47d51159
2010-03-22 17:24:34,025 - ubuntuone.SyncDaemon.sync - DEBUG - T:NONE:T 9a39116e-bc57-4a60-8198-e0bb47d51159 ['6ade791c-d80c-4f9c-b911-22bb0af7c8c5'::'9aec8395-2e47-4bdb-8524-a2c4791f1785'] ''/home/nessita/Pictures'' | Called rescan_dir
2010-03-22 17:24:34,124 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: LR_SCAN_ERROR, args:('9a39116e-bc57-4a60-8198-e0bb47d51159', False), kw:{}
2010-03-22 17:24:34,125 - ubuntuone.SyncDaemon.sync - DEBUG - T:NONE:T 9a39116e-bc57-4a60-8198-e0bb47d51159 ['6ade791c-d80c-4f9c-b911-22bb0af7c8c5'::'9aec8395-2e47-4bdb-8524-a2c4791f1785'] ''/home/nessita/Pictures'' | EVENT: LR_SCAN_ERROR:{} with ARGS:(False,)
2010-03-22 17:24:34,126 - ubuntuone.SyncDaemon.sync - DEBUG - T:NONE:T 9a39116e-bc57-4a60-8198-e0bb47d51159 ['6ade791c-d80c-4f9c-b911-22bb0af7c8c5'::'9aec8395-2e47-4bdb-8524-a2c4791f1785'] ''/home/nessita/Pictures'' | Calling rescan_dir
2010-03-22 17:24:34,126 - ubuntuone.SyncDaemon.local_rescan - INFO - scan dir: '/home/nessita/Pictures' mdid: 9a39116e-bc57-4a60-8198-e0bb47d51159
2010-03-22 17:24:34,129 - ubuntuone.SyncDaemon.local_rescan - DEBUG - The received path is not in disk: path '/home/nessita/Pictures' mdid 9a39116e-bc57-4a60-8198-e0bb47d51159
2010-03-22 17:24:34,130 - ubuntuone.SyncDaemon.sync - DEBUG - T:NONE:T 9a39116e-bc57-4a60-8198-e0bb47d51159 ['6ade791c-d80c-4f9c-b911-22bb0af7c8c5'::'9aec8395-2e47-4bdb-8524-a2c4791f1785'] ''/home/nessita/Pictures'' | Called rescan_dir
2010-03-22 17:24:34,229 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: LR_SCAN_ERROR, args:('9a39116e-bc57-4a60-8198-e0bb47d51159', False), kw:{}
2010-03-22 17:24:34,230 - ubuntuone.SyncDaemon.sync - DEBUG - T:NONE:T 9a39116e-bc57-4a60-8198-e0bb47d51159 ['6ade791c-d80c-4f9c-b911-22bb0af7c8c5'::'9aec8395-2e47-4bdb-8524-a2c4791f1785'] ''/home/nessita/Pictures'' | EVENT: LR_SCAN_ERROR:{} with ARGS:(False,)