Server marked as failed

[TheQuietLab]

Hi,

after about 20 days of running memcached I started receiving errors from my 
memcached connections like :

memcache_set(): marked server '192.168.24.146:11211' as failed
memcache_get(): marked server '192.168.24.146:11211' as failed
memcache_delete(): marked server '192.168.24.146:11211' as failed

I'm using a standard PHP memcached client and PHP is running on lighttpd 
(fast-cgi). Website has a quite decent traffic but nothing really big.

Below is a listing of memcached client stats, any ideas what might be wrong 
and where shall I look at ?

["192.168.24.146:11211"]=>
  array(22) {
    ["pid"]=>
    string(4) "6693"
    ["uptime"]=>
    string(7) "2617189"
    ["time"]=>
    string(10) "1199388191"
    ["version"]=>
    string(5) "1.2.3"
    ["pointer_size"]=>
    string(2) "32"
    ["rusage_user"]=>
    string(10) "104.850552"
    ["rusage_system"]=>
    string(10) "484.882303"
    ["curr_items"]=>
    string(6) "203546"
    ["total_items"]=>
    string(6) "470017"
    ["bytes"]=>
    string(9) "149040195"
    ["curr_connections"]=>
    string(1) "1"
    ["total_connections"]=>
    string(7) "1615552"
    ["connection_structures"]=>
    string(2) "62"
    ["cmd_get"]=>
    string(8) "10347404"
    ["cmd_set"]=>
    string(6) "470017"
    ["get_hits"]=>
    string(7) "9637733"
    ["get_misses"]=>
    string(6) "709671"
    ["evictions"]=>
    string(1) "0"
    ["bytes_read"]=>
    string(9) "710082759"
    ["bytes_written"]=>
    string(10) "9362018556"
    ["limit_maxbytes"]=>
    string(10) "1073741824"
    ["threads"]=>
    string(1) "4"

Thanks,
Andrzej Rumpfelt
thequietlab at gmail.com