не запускается mysql на xampp

Не запускается mysql на xampp. переустанавливаю - хватfет на неделю и опять по новой возникает та же проблема. запускается на 4 секунды и отваливается.
Логи

2015-11-16 12:12:44 1160 InnoDB: Warning: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
151116 12:12:44 [Note] InnoDB: Using mutexes to ref count buffer pool pages
151116 12:12:44 [Note] InnoDB: The InnoDB memory heap is disabled
151116 12:12:44 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
151116 12:12:44 [Note] InnoDB: Memory barrier is not used
151116 12:12:44 [Note] InnoDB: Compressed tables use zlib 1.2.3
151116 12:12:44 [Note] InnoDB: Not using CPU crc32 instructions
151116 12:12:44 [Note] InnoDB: Initializing buffer pool, size = 16.0M
151116 12:12:44 [Note] InnoDB: Completed initialization of buffer pool
151116 12:12:44 [Note] InnoDB: Highest supported file format is Barracuda.
151116 12:12:44 [Note] InnoDB: The log sequence numbers 1665234 and 1665234 in ibdata files do not match the log sequence number 39084928 in the ib_logfiles!
151116 12:12:44 [Note] InnoDB: Database was not shutdown normally!
151116 12:12:44 [Note] InnoDB: Starting crash recovery.
151116 12:12:44 [Note] InnoDB: Reading tablespace information from the .ibd files...
151116 12:12:44 [Note] InnoDB: Restoring possible half-written data pages
151116 12:12:44 [Note] InnoDB: from the doublewrite buffer...
151116 12:12:45 [Note] InnoDB: 128 rollback segment(s) are active.
151116 12:12:45 [Note] InnoDB: Waiting for purge to start
151116 12:12:45 [Note] InnoDB: Percona XtraDB

151116 18:25:01 [Note] Plugin 'FEEDBACK' is disabled.
151116 18:25:01 [Note] Server socket created on IP: '::'.