mod_jk2 Shutting down

[Dharamshila Khandelwal <dharmshila.k@xxxxxxxxx>]

I  apache2 connected to tomcat 5.0.19 using mod_jk2. 
In apache error logs, I get the following messages: 

[Mon Apr 11 13:47:01 2011] [notice] workerEnv.init() create slot epStat.46
[Mon Apr 11 13:47:01 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:02 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:03 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:04 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:05 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:05 2011] [notice] shm.createSlot() Create 49 0xfed00000 0xfed62000
[Mon Apr 11 13:47:05 2011] [notice] workerEnv.init() create slot epStat.44
[Mon Apr 11 13:47:05 2011] [notice] shm.createSlot() Create 50 0xfed00000 0xfed64000
[Mon Apr 11 13:47:05 2011] [notice] workerEnv.init() create slot epStat.49
[Mon Apr 11 13:47:06 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:07 2011] [warn] (128)Network is unreachable: connect to listener
[Mon Apr 11 13:47:08 2011] [notice] shm.createSlot() Create 51 0xfed00000 0xfed66000
[Mon Apr 11 13:47:08 2011] [notice] workerEnv.init() create slot epStat.50
[Mon Apr 11 13:47:15 2011] [notice] jk2_init() Found child 14206 in scoreboard slot 32
[Mon Apr 11 13:47:15 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:16 2011] [notice] workerEnv.init() create slot epStat.32
[Mon Apr 11 13:47:16 2011] [notice] jk2_init() Found child 14210 in scoreboard slot 38
[Mon Apr 11 13:47:16 2011] [notice] jk2_init() Found child 14211 in scoreboard slot 51
[Mon Apr 11 13:47:16 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:16 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:17 2011] [notice] jk2_init() Found child 14222 in scoreboard slot 52
[Mon Apr 11 13:47:17 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:17 2011] [notice] jk2_init() Found child 14223 in scoreboard slot 53
[Mon Apr 11 13:47:17 2011] [notice] jk2_init() Found child 14224 in scoreboard slot 54
[Mon Apr 11 13:47:17 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:17 2011] [notice] jk2_init() Found child 14225 in scoreboard slot 55
[Mon Apr 11 13:47:17 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:17 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() create slot epStat.38
[Mon Apr 11 13:47:18 2011] [notice] shm.createSlot() Create 52 0xfed00000 0xfed68000
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() create slot epStat.51
[Mon Apr 11 13:47:18 2011] [notice] shm.createSlot() Create 53 0xfed00000 0xfed6a000
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() create slot epStat.52
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14252 in scoreboard slot 56
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14253 in scoreboard slot 57
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14254 in scoreboard slot 58
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14255 in scoreboard slot 59
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14256 in scoreboard slot 60
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14257 in scoreboard slot 61
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14258 in scoreboard slot 62
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] jk2_init() Found child 14259 in scoreboard slot 63
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() ok /opt/hsnweb/webp93/apache2/conf/workers2.properties
[Mon Apr 11 13:47:18 2011] [notice] shm.createSlot() Create 54 0xfed00000 0xfed6c000
[Mon Apr 11 13:47:18 2011] [notice] workerEnv.init() create slot epStat.53
[Mon Apr 11 13:47:19 2011] [notice] shm.createSlot() Create 55 0xfed00000 0xfed6e000
[Mon Apr 11 13:47:19 2011] [notice] workerEnv.init() create slot epStat.54
[Mon Apr 11 13:47:22 2011] [error] Error ajp_process_callback - write failed
[Mon Apr 11 13:47:22 2011] [error] ajp13.service() ajpGetReply recoverable error 3
[Mon Apr 11 13:47:28 2011] [notice] shm.createSlot() Create 56 0xfed00000 0xfed70000
[Mon Apr 11 13:47:28 2011] [notice] workerEnv.init() create slot epStat.55
[Mon Apr 11 13:47:31 2011] [notice] shm.createSlot() Create 57 0xfed00000 0xfed72000
[Mon Apr 11 13:47:31 2011] [notice] workerEnv.init() create slot epStat.56
[Mon Apr 11 13:47:35 2011] [notice] shm.createSlot() Create 58 0xfed00000 0xfed74000
[Mon Apr 11 13:47:35 2011] [notice] workerEnv.init() create slot epStat.59
[Mon Apr 11 13:47:37 2011] [notice] mod_jk2 Shutting down
[Mon Apr 11 13:47:37 2011] [notice] mod_jk2 Shutting down

My apache instance crashes very often, we don't know the root cause, I wonder if this is the problem. 
Please advise how it can be fixed. 

Thanks,
DS.