Administration control panel and user control panel issues

[ufo]

Hello!
My board is at 3.0.7-PL1 version.
When I enter the acp i must login but then I return to the forum's homepage... The second access I can enter without login...
When I try to access the ucp I receive this error:

Code: Select all

Errore Generale
SQL ERROR [ mysql4 ]

Can't create/write to file '/var/lib/mysql/#sql_b37_0.MYI' (Errcode: 13) [1]

SQL

SELECT DISTINCT u.user_id, u.username, u.username_clean, u.user_colour, MAX(s.session_time) as online_time, MIN(s.session_viewonline) AS viewonline FROM (phpbb3_users u, phpbb3_zebra z) LEFT JOIN phpbb3_sessions s ON (s.session_user_id = z.zebra_id) WHERE z.user_id = 2 AND z.friend = 1 AND u.user_id = z.zebra_id GROUP BY z.zebra_id, u.user_id, u.username_clean, u.user_colour, u.username ORDER BY u.username_clean ASC

BACKTRACE

FILE: includes/db/mysql.php
LINE: 174
CALL: dbal->sql_error()

FILE: ucp.php
LINE: 293
CALL: dbal_mysql->sql_query()


I don't know if the problem is related with the seo-mod but I never had this kind of problem before!

[ufo]

I can't fix the problem!!! Help please!

[ufo]

Can you help me please?