Redmine

I try to update notes for issue 3888. I am using JSON only because there is an example with changing notes in Wiki: Rest_Issues.
I use curl:

curl -v -H "Content-Type:text.json" -X PUT --data "@/tmp/3888.json" -u evgeny:passwd http://redmine.komtex/issues/3888.json

File /tmp/3888.json contains:

{
    "issue": {
      "subject": "subject123" 
    },
    "notes": "Changing the subject" 
}

In my redmine log I see:

Processing IssuesController#update to json (for 127.0.0.1 at 2010-10-03 08:51:24) [PUT]
  Parameters: {"format"=>"json", "action"=>"update", "id"=>"3888", "controller"=>"issues"}
Completed in 49ms (View: 0, DB: 8) | 200 OK [http://localhost/issues/3888.json]

curl output is:

* About to connect() to redmine.komtex port 80 (#0)
*   Trying 10.1.90.220... connected
* Connected to redmine.komtex (10.1.90.220) port 80 (#0)
* Server auth using Basic with user 'evgeny'
> PUT /issues/3888.json HTTP/1.1
> Authorization: Basic ZXZnZW55OmZvcl9yZWRtaW5l
> User-Agent: curl/7.20.1 (i686-pc-linux-gnu) libcurl/7.20.1 OpenSSL/0.9.8n zlib/1.2.3 libidn/1.5
> Host: redmine.komtex
> Accept: */*
> Content-Type:text.json
> Content-Length: 88
> 
< HTTP/1.1 200 OK 
< Server: nginx/0.7.65
< Date: Sun, 03 Oct 2010 04:51:24 GMT
< Content-Type: application/json; charset=utf-8
< Connection: keep-alive
< X-Runtime: 49
< Content-Length: 1
< Cache-Control: private, max-age=0, must-revalidate
< Set-Cookie: _redmine_session=BAh7BjoPc2Vzc2lvbl9pZCIlYzQ1ZmUzNjUwNzRkNDJjMDgwZGFjOTk4MjZhOTU1ZWY%3D--12171959dac14b7ae676d5819806dccb1d2aead6; path=/; HttpOnly
< 
* Connection #0 to host redmine.komtex left intact
* Closing connection #0

Issue 3888 is left unschanged: it has old subject and no new notes. The only thing changed is the phrase: "Updated 1 minute ago".

mysql --version:

mysql  Ver 14.14 Distrib 5.1.41, for debian-linux-gnu (i486) using readline 6.1

ruby script/about fails because of:

/home/trac/redmine-1.0.2/vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb:589:in `real_connect': Access denied for user 'root'@'localhost' (using password: NO) (Mysql::Error)