.obj after import crash (MAC)

Hello I seem to be having problems with .obj’s.
whenever I import them into blender everything seems good everything is in place but after about a minute of work something will cause blender to crash!
I have tried the following things:

-using different blender versions

-using different .obj files

-trying different import parameters

-resiting my computer

and here is my computer im running on

Mac OS X 10
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 2 GB
Bus Speed: 800 MHz

So whats wrong with it?!
I can give you my .blend file if you would like to see

PLEASE NOTE: all of the .OBJ’s were created and exported from the program “make a human”

Could ou post your blend? Usually, every .obj import works fine for me.

ok now im worried because now blender isnt just crashing with that file its just crashing!
so i think its my computer but to be sure try the blend anyway
just do random things with the blend file for like 10 minutes and if it doesnt crash then its safe to say its my computer

blend: http://fileupload.filetac.com/file/eb1d53df16387f3cf5dea7e5ccbcbcc0ef6adc23

ive used blender a lot before but now its messing up!

ok im like on the verge of tears because i cant get anything done with blender!
i want to texture,rig, add particles and animate the beautiful mesh i have created but it always ends up crashing before i can get anything really done help me!
=(

i want to use it so badly!
and i think that the problem might be with the graphics card or something because it usually will have some sort of weird glitch where the mesh like goes all physco and some of the faces turn red, blue and green then blender quits
maybe if i posted the error report would someone be able to figure out whats wrong with it then?
cuz i dont understand most of the stuff with the error report

and further more sometimes blender crashing will cause my computer to freeze then i have to press the shut down button

here is the error report (all the non binarry anyway)

Process: blender [154]
Path: /Users/jo/Desktop/blender/blender.app/Contents/MacOS/blender
Identifier: org.blenderfoundation.blender
Version: 2.48 (2.48, 2008-Oct-22, Blender Foundation)
Code Type: X86 (Native)
Parent Process: launchd [97]

Date/Time: 2008-12-08 16:47:17.395 -0600
OS Version: Mac OS X 10.5.5 (9F33)
Report Version: 6

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000019392000
Crashed Thread: 0

Thread 0 Crashed:
0 ??? 0x1277a019 0 + 309829657
1 libGL.dylib 0x9125a4a6 glVertex2f + 38
2 org.blenderfoundation.blender 0x001f5c78 0x1000 + 2051192
3 org.blenderfoundation.blender 0x001f687f 0x1000 + 2054271
4 org.blenderfoundation.blender 0x000223c9 0x1000 + 136137
5 org.blenderfoundation.blender 0x000224c1 0x1000 + 136385
6 org.blenderfoundation.blender 0x001dc0a9 0x1000 + 1945769
7 org.blenderfoundation.blender 0x00028415 0x1000 + 160789
8 org.blenderfoundation.blender 0x00003591 0x1000 + 9617
9 org.blenderfoundation.blender 0x00002e02 0x1000 + 7682
10 org.blenderfoundation.blender 0x00002d29 0x1000 + 7465

Thread 1:
0 libSystem.B.dylib 0x94cd168e __semwait_signal + 10
1 libSystem.B.dylib 0x94cfc36d pthread_cond_wait$UNIX2003 + 73
2 libGLProgrammability.dylib 0x93cfcb32 glvmDoWork + 162
3 libSystem.B.dylib 0x94cfb6f5 _pthread_start + 321
4 libSystem.B.dylib 0x94cfb5b2 thread_start + 34

Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x19392000 ebx: 0x001f5a35 ecx: 0x1277a010 edx: 0x17415020
edi: 0x00000004 esi: 0x00000020 ebp: 0xbffff668 esp: 0xbffff63c
ss: 0x0000001f efl: 0x00010206 eip: 0x1277a019 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
cr2: 0x19392000

i made a new disc image and put blender on it
it seemed to work for much longer but the problem isnt fixed

ok i think i have located the problem
it has something to do with
/usr/lib/libSystem.B.dylib

the blender terminal says
“Segmentation fault
logout”

and CAN SOME ONE PLEASE HELP IM DIEING HERE!!!

One moment This your all Comment and you need some one to help ?
WOooW:spin:

what!?!
i dont understand what ur trying to say?