I started from a clean install 9.2.1 and put in all my 700+ apps (yes, I'm a major digital hoarder) from scratch, assuming that my backup had been corrupted at some point. Things worked well enough. Then I made the mistake of upgrading to 9.3 and the problem came back right away. I have a backup from before I upgraded that I am currently restoring.
When the problem happened, I immediately looked at the system log using Xcode and I can see that it has gone back to what I was seeing before.
The swcd (shared web credentials daemon) process is crashing every 10 seconds.
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Notice>: Failed to get cs_flags, error=3
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Notice>: SecTaskLoadEntitlements failed error=3 cs_flags=ffffffff, task->pid_self=-1
Mar 27 07:16:28 Philips-iPhone backboardd[60] <Warning>: BKSendHIDEvent: IOHIDEventSystemConnectionDispatchEvent error:0xE00002E8 -- Unknown event dropped
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Notice>: SecTaskCopyDebugDescription: No such process[244]
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Warning>: [Warning] Unable to get entitlements for client task. Error: Error Domain=NSPOSIXErrorDomain Code=3 "No such process"
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Warning>: [Warning] Denying xpc connection, task does not have entitlement: com.apple.private.imcore.imremoteurlconnection ((null):244)
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Warning>: [Warning] Denying xpc connection, task does not have entitlement: com.apple.private.imcore.imremoteurlconnection ((null):244)
Mar 27 07:16:28 Philips-iPhone IMRemoteURLConnectionAgent[245] <Warning>: [Warning] Denying xpc connection, task does not have entitlement: com.apple.private.imcore.imremoteurlconnection ((null):244)
...
Mar 27 07:16:40 Philips-iPhone searchd[130] <Warning>: ====^^^^ DuetExpert missing data, count -> people:7 applicationDeepLinks:0 applications:8 requests:4 missingAllDataRequests:0
Mar 27 07:16:41 Philips-iPhone diagnosticd[83] <Error>: error evaluating process info - pid: 261, punique: 261
Mar 27 07:16:41 Philips-iPhone ReportCrash[262] <Notice>: Formulating report for process[261] swcd
Mar 27 07:16:41 Philips-iPhone com.apple.xpc.launchd[1] (com.apple.swcd) <Notice>: Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Mar 27 07:16:41 Philips-iPhone UserEventAgent[26] <Notice>: jetsam: kernel termination snapshot being created
Mar 27 07:16:41 Philips-iPhone ReportCrash[262] <Warning>: report not saved because it is non-actionable
Mar 27 07:16:41 Philips-iPhone ReportCrash[263] <Warning>: Saved type '298(298)' report (7 of max 25) at /var/mobile/Library/Logs/CrashReporter/JetsamEvent-2016-03-27-071641.ips
Mar 27 07:16:45 Philips-iPhone SpringBoard[58] <Warning>: __57-[BSActionListener listenForResponseWithHandler:timeout:]_block_invoke_2120 : response timeout for port 218739
Mar 27 07:16:51 Philips-iPhone diagnosticd[83] <Error>: error evaluating process info - pid: 264, punique: 264
Mar 27 07:16:51 Philips-iPhone ReportCrash[265] <Notice>: Formulating report for process[264] swcd
Mar 27 07:16:51 Philips-iPhone com.apple.xpc.launchd[1] (com.apple.swcd) <Notice>: Service only ran for 0 seconds. Pushing respawn out by 10 seconds.
Mar 27 07:16:51 Philips-iPhone ReportCrash[265] <Warning>: report not saved because it is non-actionable
Mar 27 07:16:51 Philips-iPhone UserEventAgent[26] <Notice>: jetsam: kernel termination snapshot being created
Mar 27 07:16:51 Philips-iPhone ReportCrash[266] <Warning>: Saved type '298(298)' report (8 of max 25) at /var/mobile/Library/Logs/CrashReporter/JetsamEvent-2016-03-27-071651.ips
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