RC work with bugs

[newbe]

When I try to open addressbook, it show -
SERVICE CURRENTLY NOT AVAILABLE!
Error No. [500]
When I sending a mail, it didn't show in Sent folder.
I can't manage identities, folders.

apache error log:

[Tue Nov 09 12:04:55 2010] [error] [client 194.150.65.24] File does not exist: /
home/vmail/domen.eu/webmail/htdocs/skins/default/.css, referer: http://domen.eu
/?_task=addressbook

mail error log:

Nov  9 11:27:04 mars couriertcpd: rename(./new/1289293349.M923432P365V0000000000
00FE00I0000000000024D97_0.mars,S=3079,./cur/1289293349.M923432P365V000000000000F
E00I0000000000024D97_0.mars,S=3079:2,) failed: No such file or directory
Nov  9 11:27:05 mars couriertcpd: rename(./new/1289217246.M161294P19038V00000000
0000FE00I00000000000248DF_0.mars,S=222918,./cur/1289217246.M161294P19038V0000000
00000FE00I00000000000248DF_0.mars,S=222918:2,) failed: No such file or directory

and another mail error log

[09-Nov-2010 13:05:44] MDB2 Error: no such table (-18): _doQuery: [Error message
: Could not execute statement]
[Last executed query: PREPARE mdb2_statement_mysql_3e209c8b822e1eeda15900fc139d3
e9a693e54b20 FROM 'SELECT * FROM contactgroups WHERE del<>1 AND user_id=? ORDER
BY name']
[Native code: 1146]
[Native message: Table 'rcube_db.contactgroups' doesn't exist]

[09-Nov-2010 13:05:44 +0200]: DB Error: _doQuery: [Error message: Could not exec
ute statement]
[Last executed query: PREPARE mdb2_statement_mysql_3e209c8b822e1eeda15900fc139d3
e9a693e54b20 FROM 'SELECT * FROM contactgroups WHERE del<>1 AND user_id=? ORDER
BY name']
[Native code: 1146]
[Native message: Table 'rcube_db.contactgroups' doesn't exist]
 in /home/vmail/domen.eu/webmail/htdocs/program/include/rcube_mdb2.php on line 264
 (GET /?_task=addressbook)

PHP 5.2.4, Ubuntu
Can You help me?

[alec]

This is not a support forum. Configuration issues.