I have the same problem on my Inspiron6000 :
When I switch on : the , and [scroll] lite once and after the  blinks nine time (also tatally 10 ?).
The computer don't start.
If I remove one Memory, the computer starts and work "normally" but very very slowly.
I can use my two memory in the two slots without problem (every possibilities tested), as long as I use only one at time.
So I think :
- it's not a problem with my memory (otherwise it should have any problems with the wrong module) ?!?
- the motherboard should be Ok (otherwise it should have any problems with the wrong slot) ?!?
Is it possibl that the problem comes from a wrong memory address from Windows ?
- probabely no ?!?
Is it a good idea to buy a big memory to replace my two memory ?
Can somebody help ?
Sorry for my poor english, I hope you'll understand me.
This thread has a few fixes for this problem. It worked for me.
It seems it has to do with the contact in the memory slots. I fixed my D600 with 2 small rubber pieces in the memory compartment to put some slight pressure on the memory chip/slot. Read thru the thread and I am sure it will help