**Author:** `sushant_savla`
**Description:**
Screen short showing error
----
At least 4 users across 3 wikis are unable to login in most cases, getting error 503 from varnish in return of the login form. For each affected user, the issue is often browser- and/or wiki-specific: sometimes a user is unable to access an increasingly large number of wikis; sometimes bypassing caches helps. No other pattern was detected.
Asked for some multi-week grep -c for action=submitlogin&type=login 503 errors in logs, requires shell user.
----
When i try login in throogh Mozilla Fire fox i get error message sinc last 4 -5 days.
screen shot of error message enclosed/
Error reads
Wikimedia Foundation
Error
Our servers are currently experiencing a technical problem. This is probably temporary and should be fixed soon. Please try again in a few minutes.
If you report this error to the Wikimedia System Administrators, please include the details below.
Request: POST http://gu.wikipedia.org/w/index.php?title=%E0%AA%B5%E0%AA%BF%E0%AA%B6%E0%AB%87%E0%AA%B7:%E0%AA%B8%E0%AA%AD%E0%AB%8D%E0%AA%AF%E0%AA%AA%E0%AB%8D%E0%AA%B0%E0%AA%B5%E0%AB%87%E0%AA%B6&action=submitlogin&type=login&returnto=%E0%AA%AE%E0%AB%81%E0%AA%96%E0%AA%AA%E0%AB%83%E0%AA%B7%E0%AB%8D%E0%AA%A0, from 10.64.0.103 via cp1055 cp1055 ([10.64.32.107]:3128), Varnish XID 3251470154
Forwarded for: 120.60.225.75, 208.80.154.77, 10.64.0.103
Error: 503, Service Unavailable at Sat, 15 Nov 2014 11:53:10 GMT
Same problem is not there in IE or Opera.
----
**Attached**: {F15399}