Hi! I've set up Calendar Server 3.2 on an Ubuntu Oneiric system (with some trouble, but that's a different story), I managed to connect to our OpenLDAP, and I've configured iCal on OS X 10.7.3 to connect to Calendar Server. So far, so good. However, now and then the following appears in the access log: 10.0.1.68 - - [25/Apr/2012:15:54:07 +0200] "PROPFIND /calendars/__uids__/3d8d8220-3809-5008-aa56-d5250f800f89/ HTTP/1.1" 401 141 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=24.5 or=1 10.0.1.68 - rbh [25/Apr/2012:15:54:07 +0200] "PROPFIND /calendars/__uids__/3d8d8220-3809-5008-aa56-d5250f800f89/ HTTP/1.1" 207 32176 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=21.9 or=1 cached=1 10.0.1.68 - - [25/Apr/2012:15:55:07 +0200] "PROPFIND /calendars/__uids__/3d8d8220-3809-5008-aa56-d5250f800f89/ HTTP/1.1" 404 258 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=12.8 or=1 10.0.1.68 - - [25/Apr/2012:15:55:07 +0200] "PROPFIND /principals/__uids__/3d8d8220-3809-5008-aa56-d5250f800f89/ HTTP/1.1" 404 259 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=6.6 or=1 10.0.1.68 - - [25/Apr/2012:15:55:07 +0200] "PROPFIND /principals/__uids__/3d8d8220-3809-5008-aa56-d5250f800f89/ HTTP/1.1" 404 259 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=7.1 or=1 10.0.1.68 - - [25/Apr/2012:15:55:07 +0200] "PROPFIND / HTTP/1.1" 207 441 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=2.6 or=1 10.0.1.68 - - [25/Apr/2012:15:55:07 +0200] "PROPFIND /principals/ HTTP/1.1" 401 141 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=10.8 or=1 10.0.1.68 - rbh [25/Apr/2012:15:55:07 +0200] "PROPFIND /principals/ HTTP/1.1" 207 505 "-" "CalendarStore/5.0.2 (1166); iCal/5.0.2 (1571); Mac OS X/10.7.3 (11D50b)" i=0 t=14.7 or=1 responses=1 The first two lines come from an ordinary, successful refresh while the rest come from a refresh (that sometimes makes iCal hang, saying "iCal - Updating…" in the title of the window for more than 20 minutes) resulting in the following error from iCal: The server responded with an error. The URL https://columba.intomics.com:8443/principals/__uids__/3d8d8220-3809-5008-aa5... encountered HTTP error 404. Make sure the URL is correct. Any ideas? I had the same problems when using version 2.4 as packaged with Ubuntu Since all our clients are either MacBook Pros or iPhones, and all our servers run Linux, I'd very much like to get CalendarServer to work on Ubuntu. I've taken notes on what I've done so far, so if I manage to get it to work, I'll post a rough howto on the list. Best regards, Rasmus ----------------------------------------------------------------- Hansen, Rasmus Borup Intomics - from data to biology System Administrator Diplomvej 377 Scientific Programmer DK-2800 Kgs. Lyngby Denmark E: rbh@intomics.com W: http://www.intomics.com/ P: +45 5167 7972 P: +45 8880 7979