странные исключения под android 4.0 с eclipse

когда я использую eclipse для разработки моего проекта android, logCat всегда выводит такие предупреждения, но приложение работает нормально, может ли кто-нибудь сказать мне, что случилось.

11-23 18:17:35.802: A/NetworkStats(87): problem reading network stats
11-23 18:17:35.802: A/NetworkStats(87): java.lang.IllegalStateException: problem parsing line: null
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.internal.net.NetworkStatsFactory.readNetworkStatsDetail(NetworkStatsFactory.java:313)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.server.NetworkManagementService.getNetworkStatsUidDetail(NetworkManagementService.java:1223)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.server.net.NetworkStatsService.performPollLocked(NetworkStatsService.java:810)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.server.net.NetworkStatsService.performPoll(NetworkStatsService.java:771)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.server.net.NetworkStatsService.access$100(NetworkStatsService.java:128)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.server.net.NetworkStatsService$3.onReceive(NetworkStatsService.java:610)
11-23 18:17:35.802: A/NetworkStats(87):     at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:728)
11-23 18:17:35.802: A/NetworkStats(87):     at android.os.Handler.handleCallback(Handler.java:605)
11-23 18:17:35.802: A/NetworkStats(87):     at android.os.Handler.dispatchMessage(Handler.java:92)
11-23 18:17:35.802: A/NetworkStats(87):     at android.os.Looper.loop(Looper.java:137)
11-23 18:17:35.802: A/NetworkStats(87):     at android.os.HandlerThread.run(HandlerThread.java:60)
11-23 18:17:35.802: A/NetworkStats(87): Caused by: java.io.FileNotFoundException: /proc/net/xt_qtaguid/stats: open failed: ENOENT (No such file or directory)
11-23 18:17:35.802: A/NetworkStats(87):     at libcore.io.IoBridge.open(IoBridge.java:406)
11-23 18:17:35.802: A/NetworkStats(87):     at java.io.FileInputStream.<init>(FileInputStream.java:78)
11-23 18:17:35.802: A/NetworkStats(87):     at java.io.FileReader.<init>(FileReader.java:42)
11-23 18:17:35.802: A/NetworkStats(87):     at com.android.internal.net.NetworkStatsFactory.readNetworkStatsDetail(NetworkStatsFactory.java:272)