[G4] memory problem in dual 867

[johnnyg]

Hi,

I just purchased from OWC a 512 memory chip to put into this newly 
acquired mirror doors with only one 512 slot taken......however, after 
installing the memory, I have had freezes kernel panics and other strange 
attrocities often.  I moved the memory about in different slots and tried 
resetting the pram, and pma.   No help so I removed the memory and 
everything is smooth once again.  Is there some magic I should put into 
service here or do I likely have a bad memory chip?  OSX10.39.   Thanks.

John