The actual problem was an authentication failure (with the message mentioned in the subject line: "Digest mutual authentication failure: request-digest mismatch") that occured sometimes, as already mentioned most likely when merging. I thought that was clear enough from my previous post, sorry.
Regarding the version information: Server: Apache 2.2.14 Subversion 1.6.6 (r40053) apr 1.3.8 apr-utils 1.3.9 neon 0.29.0 OpenSSL 0.9.8k zlib 1.2.3.3 The problem occurred with different clients and client versions, on Linux, Mac, and Windows. I use commandline svn (1.6.17 - 1.7.4 on Ubuntu or Gentoo) or latest TortiseSVN: TortoiseSVN 1.7.7, Build 22907 - 64 Bit , 2012/05/15 12:16:05 Subversion 1.7.5, apr 1.4.6 apr-utils 1.3.12 neon 0.29.6 OpenSSL 1.0.1c 10 May 2012 zlib 1.2.7 ________________________________________ Von: Daniel Shahaf [d...@daniel.shahaf.name] Gesendet: Samstag, 9. Juni 2012 08:20 An: Kai Bernhard Cc: users@subversion.apache.org Betreff: Re: About Apache+SVN "Digest mutual authentication failure: request-digest mismatch" / Server was not authenticated correctly You neglected to mention what the actual problem you ran into is and what versions of svn (and relevant dependencies) you use on your client and server. Thanks for the information! Kai Bernhard wrote on Fri, Jun 08, 2012 at 15:05:34 +0200: > Hello list, > > I was experiencing problems with authentication (using HTTP Digest Auth+SSL) > on our SVN server. It seems it has been reported a few years ago (see > http://subversion.tigris.org/ds/viewMessage.do?dsForumId=1065&dsMessageId=911173), > but I was not able to find a solution anywhere. The problem occured most > often when merging, sometimes when checking out/in or updating. Trying to > work around another problem (apache leaking memory, see > https://bugs.launchpad.net/ubuntu/+source/subversion/+bug/273859), I set > 'SVNAllowBulkUpdates Off' which caused the authentication problem to occur a > lot more frequently. Finally it seems both my problems are gone after > switching from mpm-worker to mpm-prefork, with 'SVNAllowBulkUpdates Off'. > > This info might be useful for other users experiencing the same problem and > give a hint that the authentication problem seems to be related to threading > issues. > > Cheers, > > Kai > > PS. I'm not subscribed to the list, please CC me in responses or mail me in > case I can help with more detailed info.