iPhone 4s restarting itself repeatedly panic.plist.synced

Hi all, My iPhone 4S has recently developed a habit of switching itself off and on again. This problem has never cropped up before (i've been using the phone problem-free since November 2011) however in the past week or so it randomly restarts itelf in a similar fashion as if I had held down the home and power button for a hard-reset. I've checked the diagnostics & usage logs and see a load of panic.plist.synced entries (full crash log below). Can anyone help decipher what this crash log means? Is there a solution to this other than bringing it back to the Apple Store for a replacement, as that is what other discussions with similar issues seems to suggest? I'm finding the lack of reliability in my iPhone 4S very annoying... Incident Identifier: 4114C4F6-2151-4F19-A113-2BF96D846AA3CrashReporter Key: 84fcdc767df931c6a41aa9cad05cd33f270beae2Hardware Model: iPhone4,1Date/Time: 2012-02-26 15:46:18.739 +0100OS Version: iPhone OS 5.0.1 (9A405) panic(cpu 0 caller 0x808436df): "i2c1::_interruptFilter interrupt whenno transaction in flight; last read status 17010100 xfer 00000003 fifo00000000 "@/SourceCache/AppleS5L8940X/AppleS5L8940X-105.6/apples5l8940xi2c.cpp: 273Debugger message: panicOS version: 9A405Kernel version: Darwin Kernel Version 11.0.0: Tue Nov 1 20:34:16 PDT2011; root:xnu-1878.4.46~1/RELEASE_ARM_S5L8940XiBoot version: iBoot-1219.43.32secure boot?: YESPaniclog version: 1Epoch Time: sec usecBoot : 0x4f4a457f 0x00000000Sleep : 0x00000000 0x00000000Wake : 0x00000000 0x00000000Calendar: 0x4f4a458f 0x000e609b Task 0xc085ed20: 8698 pages, 105 threads: pid 0: kernel_taskthread 0xc0963080kernel backtrace: 802bdef0lr: 0x8007bccb fp: 0x802bdf1clr: 0x8007c2cf fp: 0x802bdf4clr: 0x80016391 fp: 0x802bdf64lr: 0x808436df fp: 0x802bdfa4lr: 0x80843785 fp: 0x802bdfbclr: 0x8021e477 fp: 0x802bdfd0lr: 0x809ddf73 fp: 0x802bdff0lr: 0x8022b5df fp: 0x802bdff8lr: 0x800797c4 fp: 0xcfd73d48lr: 0x8021c6a3 fp: 0xcfd73d50lr: 0x8021e85b fp: 0xcfd73d64lr: 0x8091b613 fp: 0xcfd73d88lr: 0x8091d4cd fp: 0xcfd73db0lr: 0x8091e283 fp: 0xcfd73dd0lr: 0x8021d039 fp: 0xcfd73dfclr: 0x8091a177 fp: 0xcfd73e0clr: 0x806345ef fp: 0xcfd73e14lr: 0x80647ecb fp: 0xcfd73e70lr: 0x80647fdb fp: 0xcfd73ea0lr: 0x8065d90f fp: 0xcfd73ee4lr: 0x8064fc3d fp: 0xcfd73f34lr: 0x80650135 fp: 0xcfd73f50lr: 0x806487a1 fp: 0xcfd73f64lr: 0x8063e291 fp: 0xcfd73f80lr: 0x8063e52d fp: 0xcfd73fa8lr: 0x8007a3bc fp: 0x00000000 Task 0xc085eac0: 213 pages, 3 threads: pid 1: launchdTask 0xc085e860: 201 pages, 1 threads: pid 2: launchctlTask 0xc085e600: 635 pages, 11 threads: pid 12: UserEventAgentTask 0xc085e140: 193 pages, 5 threads: pid 13: notifydTask 0xc085e3a0: 562 pages, 12 threads: pid 14: configdTask 0xc085dee0: 2604 pages, 16 threads: pid 15: SpringBoardTask 0xc085dc80: 142 pages, 4 threads: pid 16: syslogdTask 0xc085da20: 576 pages, 5 threads: pid 17: ptpdTask 0xc085d7c0: 1605 pages, 17 threads: pid 18: CommCenterTask 0xc085d560: 233 pages, 3 threads: pid 19: sandboxdTask 0xc085d300: 949 pages, 3 threads: pid 20: profiledTask 0xc085d0a0: 598 pages, 9 threads: pid 21: lockdowndTask 0xc Cheers,Tony