Under specific circumstances, which seem to be something around:
 - using IPA under Internet Exploder

 - machine part of AD (Windows-only network, not part of IPA)

 - with user entering login/password via Krb5Passwd (not negotiate)

 - leaving the window untouched for a couple of minutes


a JSON error pops up (see screenshot). The server is not under any load,
network throughput is fine, and repeating the action eventually leads to the
action being executed.


/var/log/httpd/error.log gives me these hints:
[Thu Jun 14 16:04:57 2012] [error] ipa: ERROR: release_ipa_ccache: ccache_name
(FILE:/tmp/krb5cc_apache_q4B5Vw) != KRB5CCNAME environment variable
(FILE:/tmp/krb5cc_apach
[Thu Jun 14 16:04:58 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: i18n_messages(): SUCCESS
[Thu Jun 14 16:04:58 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: user_find(None, whoami=True, all=True): SUCCESS
[Thu Jun 14 16:04:58 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: env(None): SUCCESS
[Thu Jun 14 16:04:58 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: dns_is_enabled(): SUCCESS
[Thu Jun 14 16:04:58 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch(({u'params': [[], {}], u'method': u'i18n_messages'}, {u'params': [[],
{u'all': True, u'whoami
[Thu Jun 14 16:05:00 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
JSONError
[Thu Jun 14 16:05:00 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
json_metadata(None, None, object=u'all'): SUCCESS
[Thu Jun 14 16:05:06 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
json_metadata(None, None, command=u'all'): SUCCESS
[Thu Jun 14 16:05:08 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
user_find(None, sizelimit=0, pkey_only=True): SUCCESS
[Thu Jun 14 16:05:09 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: user_show(u'admin', all=True): SUCCESS
[Thu Jun 14 16:05:09 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch: user_show(u'bztest', all=True): SUCCESS
etc
....
[Thu Jun 14 16:05:09 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
batch(({u'params': [[u'myuser'], {u'all': True}], u'method': u'user_show'},
{u'params': [[u'adm
[Thu Jun 14 16:06:02 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
JSONError
[Thu Jun 14 16:06:05 2012] [error] ipa: INFO: user_obscured@DOMAIN_OBSCURED:
JSONError



Given this is not repruducible with Firefox I blame IE for doing something
messy with AD.

I still have the logs handy, if you point me to the right direction before they
(log)rotate to log heaven, I'll be glad to paste them here.


ipa-2.2.0-14.el6