[G4 Q&A, Help & Troubleshooting] InsipidMonkey:
Ok, I ran logcat several times and found the following event associated with the toast notifications. Interestingly, the notification text has changed from the original "* OK *" to "*-OK-*" today.

Any idea what this is or what's causing it?

12-19 10:02:44.087 3470 3470 I [SystemUI]NetworkController: Change in state from: connected=true,enabled=true,level=3,inetCondition=1,iconGroup=IconGroup(Default Wi-Fi Icons),activityIn=false,activityOut=false,rssi=-47,lastModified=12-19 10:02:39,ssid="***********"

12-19 10:02:44.087 3470 3470 I [SystemUI]NetworkController:	to: connected=true,enabled=true,level=3,inetCondition=1,iconGroup=IconGroup(Default Wi-Fi Icons),activityIn=false,activityOut=true,rssi=-47,lastModified=12-19 10:02:39,ssid="**********"

12-19 10:02:44.161 438 1203 D BandwidthController: [LG DATA] No such appUid: 10226

12-19 10:02:44.161 438 1203 D DnsProxyListener: App 10226 tries DNS query. Accept family:0 protocol:0

12-19 10:02:44.169 21587 21619 D OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true

[COLOR="Red"]12-19 10:02:44.190 1220 1234 D WindowManager: addWindowToListInOrderLocked: win=Window{c7f2ae u0 Toast} Callers=com.android.server.wm.WindowManagerService.addWindow:2615 com.android.server.wm.Session.addToDisplay:169 android.view.IWindowSession$Stub.onTransact:124 com.android.server.wm.Session.onTransact:131

12-19 10:02:44.190 1220 1234 V WindowManager: Free window: Adding window Window{c7f2ae u0 Toast} at 13 of 18[/COLOR]

12-19 10:02:44.297 1220 4273 V WindowManager: Looking for focus: 15 = Window{cc9d48f u0 StatusBar}, flags=-2122055608, canReceive=false

12-19 10:02:44.297 1220 4273 V WindowManager: findFocusedWindow: Found new focus @ 7 = Window{b5c17ff u0 com.google.android.googlequicksearchbox/com.google.android.apps.gsa.velour.dynamichosts.VelvetThemedDynamicHostActivity}

12-19 10:02:44.307 1220 4273 D PowerManagerServiceAO: acquireWakeLockInternal: lock=145297574, flags=0x2000000a, tag="WindowManager", ws=WorkSource{10226}, historyTag=null, uid=1000, pid=1220

12-19 10:02:44.307 1220 4273 D PocketDetection: updateScreenWakelockState: mScreenWakeLockList.add(SCREEN_BRIGHT_WAKE_LOCK 'WindowManager' ON_AFTER_RELEASE android (uid=1000, pid=1220, ws=WorkSource{10226}) uptime = 0)

12-19 10:02:44.307 1220 4273 D PocketDetection: updateScreenWakelockState: mScreenWakeLockList.add(SCREEN_BRIGHT_WAKE_LOCK 'WindowManager' ON_AFTER_RELEASE android (uid=1000, pid=1220, ws=WorkSource{10226}) uptime = 0), mIsScreenWakelockAcquired = true

12-19 10:02:44.313 21587 21619 I Adreno : QUALCOMM build : ac1ef73, I86756fd4a8

12-19 10:02:44.313 21587 21619 I Adreno : Build Date : 10/05/15

12-19 10:02:44.313 21587 21619 I Adreno : OpenGL ES Shader Compiler Version: XE031.06.00.00

12-19 10:02:44.313 21587 21619 I Adreno : Local Branch :

12-19 10:02:44.313 21587 21619 I Adreno : Remote Branch :

12-19 10:02:44.313 21587 21619 I Adreno : Remote Branch :

12-19 10:02:44.313 21587 21619 I Adreno : Reconstruct Branch :

12-19 10:02:44.319 21587 21619 I OpenGLRenderer: Initialized EGL, version 1.4

12-19 10:02:44.415 459 617 E ThermalEngine: [GPU_MON] Gpu Clock is back to idle state ( 600000000 Mhz )

12-19 10:02:44.415 459 617 E ThermalEngine: [GPU_MON] ACTION: GPU - [GPU_MON] Setting GPU[0] to 600000000

12-19 10:02:44.415 459 617 E ThermalEngine: ACTION: GPU - Setting max_pwrlevel to 0

12-19 10:02:44.471 21587 21620 I HOTLINE_SERVICE: Now Processing g

12-19 10:02:44.550 21587 21620 I HOTLINE : Processing Backlog : 5 p: 8192

12-19 10:02:44.574 21587 21620 I HOTLINE_SERVICE: Now Processing aa

12-19 10:02:44.627 21587 21620 I HOTLINE_SERVICE: Now Processing v

12-19 10:02:45.012 1220 3370 D InputDispatcher: notifyMotion - action=ACTION_DOWN(0), id=0, tooltype=1, deviceId=4, source=0x1002, policyFlags=0x0, flags=0x0, metaState=0x0, buttonState=0x0, edgeFlags=0x0, eventTime=213408382823000, downTime=213408382823000,

12-19 10:02:45.013 1220 3369 D InputTransport: channel 'b5c17ff com.google.android.googlequicksearchbox/com.google.android.apps.gsa.velour.dynamichosts.VelvetThemedDynamicHostActivity (server)' : action=ACTION_DOWN(0), id=0, tooltype=1, deviceId=4, source=0x1002, flags=0x2, edgeFlags=0x0, metaState=0x0, buttonState=0x0, downTime=213408382823000, eventTime=213408382823000, pointerCount=1