I am running Ubuntu 12.04.3 and svn as well as ssh (to servers) only works sometimes in a short time window after booting my computer, but most of the time I get "Connection refused". The problem only started some weeks ago, before it, everything worked perfectly fine.
It should not be a server issue and also not a router issue, since using my notebook I can connect without problems.
I have already reinstalled Ubuntu and tried 12.10 and 13.04, the problem happens also in these versions. However, after reinstalling Ubuntu 12.04.3, it seemed to work, I may re-introduced the problem by copying back my home folder from the previous installation (if there is some config in this folder?).
Uncommenting "dnsmasq" in NetworkManager.conf seems to help in regard to the ssh problem, but for svn I still can get no connection.
ssh -vvvvv
gives
OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to xxxx port 22.
debug1: connect to address xxx port 22: Connection refused
ssh: connect to xxx port 22: Connection refused
What other output do you need?
Thank you for your help, the problem really drives me crazy.
Edit: Now ssh works and svn not and I did not change anything, before the last boot svn worked.
I tried
arp-scan -I eth0 -l
and got a (DUP:2) with two times the same IP and MAC adress.