The sequence (below) appears to start with a "failed upload: http error". Subsequent attempts to upload the file fail with the "locked by file_upload_handler" error. This seems to clear up after after a scheduler action to a different project.

6/15/2006 6:56:13 AM|Leiden Classical|Sending scheduler request to http://boinc.gorlaeus.net/Classical_cgi/cgi
6/15/2006 6:56:13 AM|Leiden Classical|Reason: To fetch work
6/15/2006 6:56:13 AM|Leiden Classical|Requesting 1384 seconds of new work
6/15/2006 6:56:18 AM|Leiden Classical|Scheduler request succeeded
6/15/2006 6:56:20 AM|Leiden Classical|Started download of file classical.water_molecules_898976128_1150093744_938
6/15/2006 6:56:21 AM|Leiden Classical|Finished download of file classical.water_molecules_898976128_1150093744_938
6/15/2006 6:56:21 AM|Leiden Classical|Throughput 14544 bytes/sec
6/15/2006 6:56:22 AM||Rescheduling CPU: files downloaded
6/15/2006 6:57:05 AM||Project communication failed: attempting access to reference site
6/15/2006 6:57:05 AM||Access to reference site succeeded - project servers may be temporarily down.
6/15/2006 6:57:05 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: http error
6/15/2006 6:57:05 AM|Leiden Classical|Backing off 1 minutes and 0 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 6:58:06 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 6:58:07 AM|Leiden Classical|Error on file upload: [Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0] locked by file_upload_handler PID=17482
6/15/2006 6:58:07 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: transient upload error
6/15/2006 6:58:07 AM|Leiden Classical|Backing off 1 minutes and 0 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 6:59:07 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 6:59:08 AM|Leiden Classical|Error on file upload: [Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0] locked by file_upload_handler PID=17482
6/15/2006 6:59:08 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: transient upload error
6/15/2006 6:59:08 AM|Leiden Classical|Backing off 1 minutes and 0 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:00:08 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:00:10 AM|Leiden Classical|Error on file upload: [Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0] locked by file_upload_handler PID=17482
6/15/2006 7:00:10 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: transient upload error
6/15/2006 7:00:10 AM|Leiden Classical|Backing off 1 minutes and 0 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:01:10 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:01:11 AM|Leiden Classical|Error on file upload: [Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0] locked by file_upload_handler PID=17482
6/15/2006 7:01:11 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: transient upload error
6/15/2006 7:01:11 AM|Leiden Classical|Backing off 1 minutes and 31 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:02:43 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:02:45 AM|Leiden Classical|Error on file upload: [Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0] locked by file_upload_handler PID=17482
6/15/2006 7:02:45 AM|Leiden Classical|Temporarily failed upload of Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0: transient upload error
6/15/2006 7:02:45 AM|Leiden Classical|Backing off 4 minutes and 34 seconds on upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:06:00 AM|LHC@home|Sending scheduler request to http://lhcathome-sched1.cern.ch/scheduler/cgi
6/15/2006 7:06:00 AM|LHC@home|Reason: To fetch work
6/15/2006 7:06:00 AM|LHC@home|Requesting 17280 seconds of new work
6/15/2006 7:06:05 AM|LHC@home|Scheduler request succeeded
6/15/2006 7:06:05 AM|LHC@home|No work from project
6/15/2006 7:06:05 AM|LHC@home|Deferring scheduler requests for 1 hours, 42 minutes and 8 seconds
6/15/2006 7:07:19 AM|Leiden Classical|Started upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:07:39 AM|Leiden Classical|Finished upload of file Argon_294K_queue_2_1150367925_794f14d61eccdd6bcd0c166b8a3038d1_1_0
6/15/2006 7:07:39 AM|Leiden Classical|Throughput 64184 bytes/sec
6/15/2006 7:07:41 AM|Leiden Classical|Sending scheduler request to http://boinc.gorlaeus.net/Classical_cgi/cgi
6/15/2006 7:07:41 AM|Leiden Classical|Reason: To report completed tasks
6/15/2006 7:07:41 AM|Leiden Classical|Reporting 1 tasks
6/15/2006 7:07:46 AM|Leiden Classical|Scheduler request succeeded