After upgrading OS X El Capitan, my MBP is crashing constantly...

Since I upgraded to OS X El Capitan a few weeks ago, my (mid 2009) Macbook Pro is crashing CONSTANTLY! It started off just once a day or so... progressively has been getting worse.. at times just crashing over and over 3-4x every few minutes. Can anyone help me figure out what's wrong by reading the panic report? Any help would be greatly appreciated!!

Anonymous UUID: D6E9DCEA-8599-B845-1094-5753BAB2DB96

Mon Nov 30 13:13:00 2015

*** Panic Report ***

panic(cpu 1 caller 0xffffff80037d6bba): Kernel trap at 0xffffff80036ca4f0, type 14=page fault, registers:

CR0: 0x0000000080010033, CR2: 0x000000000000104d, CR3: 0x000000013617c000, CR4: 0x0000000000002660

RAX: 0x00000000000010c0, RBX: 0xffffff800f012c00, RCX: 0x0000000000000000, RDX: 0xffffff8003eeb338

RSP: 0xffffff909d38b498, RBP: 0xffffff909d38b4e0, RSI: 0x0000000000000001, RDI: 0xffffff8003eeb230

R8: 0xffffff800ee52800, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000006ac6

R12: 0x0000000000000110, R13: 0x0000000000000004, R14: 0x0000000000000190, R15: 0x0000000000020fff

RFL: 0x0000000000010296, RIP: 0xffffff80036ca4f0, CS: 0x0000000000000008, SS: 0x0000000000000000

Fault CR2: 0x000000000000104d, Error code: 0x0000000000000002, Fault CPU: 0x1, PL: 0

Backtrace (CPU 1), Frame : Return Address

0xffffff909d38b120 : 0xffffff80036e5307

0xffffff909d38b1a0 : 0xffffff80037d6bba

0xffffff909d38b380 : 0xffffff80037f4313

0xffffff909d38b3a0 : 0xffffff80036ca4f0

0xffffff909d38b4e0 : 0xffffff800377d727

0xffffff909d38b860 : 0xffffff8003bdb336

0xffffff909d38b890 : 0xffffff8003b1bb8d

0xffffff909d38b990 : 0xffffff8003c235d4

0xffffff909d38baa0 : 0xffffff8003746738

0xffffff909d38baf0 : 0xffffff80037458e3

0xffffff909d38bb30 : 0xffffff8003750fc0

0xffffff909d38bd00 : 0xffffff8003756b7e

0xffffff909d38bf20 : 0xffffff80037d71af

0xffffff909d38bfb0 : 0xffffff80037f4225

BSD process name corresponding to current thread: ManagedClient

Mac OS version:

15B42

Kernel version:

Darwin Kernel Version 15.0.0: Sat Sep 19 15:53:46 PDT 2015; root:xnu-3247.10.11~1/RELEASE_X86_64

Kernel UUID: AB5FC1B4-12E7-311E-8E6F-9023985D8C1D

Kernel slide: 0x0000000003400000

Kernel text base: 0xffffff8003600000

__HIB text base: 0xffffff8003500000

System model name: MacBookPro5,5 (Mac-F2268AC8)

System uptime in nanoseconds: 26407792763

last loaded kext at 2540940660: com.apple.driver.AppleUSBTCButtons 245.4 (addr 0xffffff7f85802000, size 20480)

loaded kexts:

com.apple.driver.AppleUSBTCButtons 245.4

com.apple.driver.AppleFileSystemDriver 3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0

com.apple.BootCache 37

com.apple.iokit.IOBluetoothUSBDFU 4.4.2f1

com.apple.driver.AppleUSBTCKeyEventDriver 245.4

com.apple.driver.AppleUSBTCKeyboard 245.4

com.apple.driver.AppleIRController 327.5

com.apple.driver.AppleUSBStorageCoexistentDriver 3.7.1

com.apple.driver.AppleUSBCardReader 3.7.1

com.apple.iokit.SCSITaskUserClient 3.7.7

com.apple.iokit.IOAHCIBlockStorage 2.8.0

com.apple.driver.AirPort.Brcm4331 800.20.24

com.apple.driver.AppleFWOHCI 5.5.2

com.apple.nvenet 2.0.22

com.apple.driver.usb.AppleUSBEHCIPCI 1.0.1

com.apple.driver.usb.AppleUSBOHCIPCI 1.0.1

com.apple.driver.AppleAHCIPort 3.1.5

com.apple.driver.AppleSmartBatteryManager 161.0.0

com.apple.driver.AppleRTC 2.0

com.apple.driver.AppleHPET 1.8

com.apple.driver.AppleACPIButtons 4.0

com.apple.driver.AppleSMBIOS 2.1

com.apple.driver.AppleACPIEC 4.0

com.apple.driver.AppleAPIC 1.7

com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0

com.apple.nke.applicationfirewall 163

com.apple.security.quarantine 3

com.apple.security.TMSafetyNet 8

com.apple.driver.AppleIntelCPUPowerManagement 218.0.0

com.apple.driver.AppleUSBMultitouch 250.4

com.apple.driver.usb.AppleUSBHub 1.0.1

com.apple.iokit.IOUSBHIDDriver 900.4.1

com.apple.iokit.IOUSBMassStorageClass 4.0.0

com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.7

com.apple.iokit.IOUSBMassStorageDriver 1.0.0

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.7

com.apple.iokit.IOBDStorageFamily 1.8

com.apple.iokit.IODVDStorageFamily 1.8

com.apple.iokit.IOCDStorageFamily 1.8

com.apple.driver.usb.AppleUSBHostCompositeDevice 1.0.1

com.apple.iokit.IOAHCISerialATAPI 2.6.2

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.7

com.apple.driver.AppleXsanScheme 3

com.apple.iokit.IO80211Family 1101.24

com.apple.driver.corecapture 1.0.4

com.apple.iokit.IOFireWireFamily 4.5.8

com.apple.iokit.IONetworkingFamily 3.2

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleUSBMergeNub 900.4.1

com.apple.driver.usb.AppleUSBOHCI 1.0.1

com.apple.driver.usb.AppleUSBEHCI 1.0.1

com.apple.iokit.IOAHCIFamily 2.8.0

com.apple.driver.AppleEFINVRAM 2.0

com.apple.iokit.IOUSBFamily 900.4.1

com.apple.iokit.IOUSBHostFamily 1.0.1

com.apple.driver.AppleUSBHostMergeProperties 1.0.1

com.apple.driver.AppleEFIRuntime 2.0

com.apple.iokit.IOHIDFamily 2.0.0

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 300.0

com.apple.kext.AppleMatch 1.0.0d1

com.apple.driver.AppleKeyStore 2

com.apple.driver.AppleMobileFileIntegrity 1.0.5

com.apple.driver.AppleCredentialManager 1.0

com.apple.driver.DiskImages 415

com.apple.iokit.IOStorageFamily 2.1

com.apple.iokit.IOReportFamily 31

com.apple.driver.AppleFDEKeyStore 28.30

com.apple.driver.AppleACPIPlatform 4.0

com.apple.iokit.IOPCIFamily 2.9

com.apple.iokit.IOACPIFamily 1.4

com.apple.kec.Libm 1

com.apple.kec.pthread 1

com.apple.kec.corecrypto 1.0