Hello everyone, My webserver sent me this exception by email a few hours ago: exceptions.ValueError: Unknown datetime format 'Mon, 14 Mar 2005 02:11:29 GMT; length=10208' 2005/04/26 13:52 CEST [HTTPChannel,388,hidden] Traceback (most recent call last): File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/internet/defer.py", line 216, in addCa llback File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/internet/defer.py", line 207, in addCa llbacks File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/internet/defer.py", line 328, in _runC allbacks File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/nevow/appserver.py", line 158, in gotPageConte xt --- <exception caught here> --- File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/internet/defer.py", line 117, in maybe Deferred File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/nevow/static.py", line 293, in renderHTTP File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/web/http.py", line 798, in setLastModi fied File "/home/build/bin/i686/python-20050408/lib/python2.4/site-packages/twisted/web/http.py", line 293, in stringToDat etime exceptions.ValueError: Unknown datetime format 'Mon, 14 Mar 2005 02:11:29 GMT; length=10208' It seems it has been generated by the https://www.cpushare.com/contact/ form my in website. These are the related https logs (all IP client addess hidden for full privacy of the user): [26/Apr/2005:11:51:33 +0000] "GET /contact/ HTTP/1.0" 302 340 "http://www.cpushare.com/legal" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:51:34 +0000] "GET /__session_key__cdc402734e5547886f2014b7138309ad/contact/ HTTP/1.0" 302 244 "http://www.cpushare.com/legal" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:51:34 +0000] "GET /contact/ HTTP/1.0" 200 5495 "http://www.cpushare.com/legal" "Mozilla/4.0(compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:51:35 +0000] "GET /cpushare.css HTTP/1.0" 200 10208 "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:51:35 +0000] "GET /contact/image_verification?cdc402734e5547886f2014b7138309ad_0_182154136 HTTP/1.0" 200 7033 "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:01 +0000] "GET /contact/ HTTP/1.0" 200 5495 "http://www.cpushare.com/about" "Mozilla/4.0(compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:02 +0000] "GET /contact/image_verification?cdc402734e5547886f2014b7138309ad_0_128972277 HTTP/1.0" 200 6957 "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:07 +0000] "GET /contact/ HTTP/1.0" 200 5495 "http://www.cpushare.com/about" "Mozilla/4.0(compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:08 +0000] "GET /cpushare.css HTTP/1.0" 302 - "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:08 +0000] "GET /contact/image_verification?cdc402734e5547886f2014b7138309ad_0_185839024 HTTP/1.0" 200 7046 "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" [26/Apr/2005:11:52:08 +0000] "GET /internal_server_error HTTP/1.0" 200 2099 "https://www.cpushare.com/contact/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.0.3705; .NET CLR 1.1.4322)" It sounds a minor bug in twisted/web not in my app. I won't have time to debug this myself until tomorrow, it's not very urgent since this is the first time it happened, and no other user reproduced this problem. Thanks.