Macbook Pro 13 crashes frequently after some days of upgrade

Question

Hey guys, i had a MBP 13' Mid 2009 2.64G. Recently i upgraded it to Kingston SSD V+ 128GB (SNVP325-S2B/128GB) and upgrade the memories to 2*4G PC1333 Patriot (PSD38G1333SK) and change the superdrive to a harddrive (HITACHI 500GB).
I reinstall the system and all the softwares. It runs really good for like a week.
And it was 2 days ago, I remember it crashed during using firefox watching some youtube video, and after that it crashes frequestly.
I tried to use iDVD to make a DVD and I added a external USB drive, and it crashes.
I didn't turn off the Sudden Motion Sensor which might be a problem. I didn't usually put the computer to sleep.
Anyone have idea about what might be wrong? Any suggestion?
BTW, I'm reinstall system and everything to see if it's something wrong with the software.

Answer 1

Thank you very much for the reply.
I did reinstall the system and upgrade to 10.6.5, and this morning just open a safari and an iDVD and it crashed again (freeze). I got error down below.
I didn't know that I need to reset PRAM before your post, but I did a little research about it. And now I changed back the old memeries, and I did reset PRAM this time. I will see if it'll work.
Thanks again.
Here is part of the report:
Interval Since Last Panic Report: 2637 sec
Panics Since Last Report: 1
Anonymous UUID: D22A1AE0-D8A5-4F42-A524-F9499D8645B7
Wed Dec 8 13:41:41 2010
panic(cpu 0 caller 0x2aab55): Kernel trap at 0x012a0352, type 14=page fault, registers:
CR0: 0x8001003b, CR2: 0x00000008, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x4dc105eb, EBX: 0x00000000, ECX: 0x0000024a, EDX: 0x00000008
CR2: 0x00000008, EBP: 0x00000001, ESI: 0x0d2a8200, EDI: 0x013aa579
EFL: 0x00010286, EIP: 0x012a0352, CS: 0x00000008, DS: 0x0d680010
Error code: 0x00000002
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x7bfa3c88 : 0x21b50c (0x5d42fc 0x7bfa3cbc 0x223974 0x0)
0x7bfa3cd8 : 0x2aab55 (0x59616c 0x12a0352 0xe 0x596! 336)
0x7bfa3db8 : 0x2a09a8 (0x7bfa3dd0 0x0 0x1 0x12a0352)
0x7bfa3dc8 : 0x12a0352 (0xe 0x12a0048 0x10 0x10)
Unaligned frame
Backtrace terminated-invalid frame pointer 0x1
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.DspFuncLib(1.9.9f12)@0x1243000->0x12c2fff
dependency: com.apple.iokit.IOAudioFamily(1.7.9fc4)@0x122b000
dependency: com.apple.kext.OSvKernDSPLib(1.3)@0x1227000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
10H574
Kernel version:
Darwin Kernel Version 10.5.0: Fri Nov 5 23:20:39 PDT 2010; root:xnu-1504.9.17~1/RELEASE_I386
System model name: MacBookPro5,5! (Mac-F2268AC8)
System uptime in nanoseconds: 2533167220491
unloaded kexts:
com.apple.driver.AirPortBrcm43xx 423.91.27 (addr 0xee2000, size 0x1900544) - last unloaded 101713435701
loaded kexts:
com.apple.driver.AppleHWSensor 1.9.3d0 - last loaded 9068654918
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AGPM 100.12.19
com.apple.driver.AppleMikeyHIDDriver 1.2.0