Curious display on some index like the sox ?

[lemanioc@xxxx]

Hi,
I tried to load the semiconductor index ^sox from Yahoo quotes into 
amibroker, but it won't load it as it seems yahoo doesn't handle all 
the data of the sox.
it happens with other index. It seems data in yahoo is not the same 
as what you can find on other place for some indexes.

Any clue why and how to remedie ?

Thanks,
Manioc