Kan mysql niet meer starten

Dec 19 20:04:58 server mysqld_safe[7902]: started
Dec 19 20:04:58 server mysqld[7906]: 091219 20:04:58 [Warning] Can't create test file /var/lib/mysql/server.lower-test
Dec 19 20:04:58 server mysqld[7906]: 091219 20:04:58 [Warning] Can't create test file /var/lib/mysql/server.lower-test
Dec 19 20:04:58 server mysqld[7906]: 091219 20:04:58 [Warning] One can only use the --user switch if running as root
Dec 19 20:04:58 server mysqld[7906]: 
Dec 19 20:04:58 server mysqld[7906]: 091219 20:04:58  InnoDB: Operating system error number 13 in a file operation.
Dec 19 20:04:58 server mysqld[7906]: InnoDB: The error means mysqld does not have the access rights to
Dec 19 20:04:58 server mysqld[7906]: InnoDB: the directory.
Dec 19 20:04:58 server mysqld[7906]: InnoDB: File name ./ibdata1
Dec 19 20:04:58 server mysqld[7906]: InnoDB: File operation call: 'open'.
Dec 19 20:04:58 server mysqld[7906]: InnoDB: Cannot continue operation.
Dec 19 20:04:58 server mysqld_safe[7912]: ended
Dec 19 20:05:12 server /etc/init.d/mysql[8062]: 0 processes alive and '/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping' resulted in
Dec 19 20:05:12 server /etc/init.d/mysql[8062]: Could not open required defaults file: /etc/mysql/debian.cnf
Dec 19 20:05:12 server /etc/init.d/mysql[8062]: Fatal error in defaults handling. Program aborted
Dec 19 20:05:12 server /etc/init.d/mysql[8062]: 

Dec 19 20:24:48 server mysqld_safe[5498]: started
Dec 19 20:24:48 server mysqld[5502]: InnoDB: The log sequence number in ibdata files does not match
Dec 19 20:24:48 server mysqld[5502]: InnoDB: the log sequence number in the ib_logfiles!
Dec 19 20:24:48 server mysqld[5502]: 091219 20:24:48  InnoDB: Database was not shut down normally!
Dec 19 20:24:48 server mysqld[5502]: InnoDB: Starting crash recovery.
Dec 19 20:24:48 server mysqld[5502]: InnoDB: Reading tablespace information from the .ibd files...
Dec 19 20:24:48 server mysqld[5502]: InnoDB: Restoring possible half-written data pages from the doublewrite
Dec 19 20:24:48 server mysqld[5502]: InnoDB: buffer...
Dec 19 20:24:48 server mysqld[5502]: 091219 20:24:48  InnoDB: Started; log sequence number 6 2032146287
Dec 19 20:24:48 server mysqld[5502]: 091219 20:24:48 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist
Dec 19 20:24:48 server mysqld_safe[5513]: ended