pageiolatch_sh and latch_ex

Would the above waittypes strongly correlate to IO ? Or could it also me
memory ?
I thought I had seen more info of these types out here
http://sqldev.net/articles/wait_types.htm, but Gert is working on it I guess
at this moment and the wait types that I was interested in have just what
that waitype means and doesnt have more details.
Does anyone know where I can find more about those waits ?See http://support.microsoft.com/default.aspx?scid=kb;en-us;822101.
"Hassan" <fatima_ja@.hotmail.com> wrote in message
news:%23H2qANFcFHA.1384@.TK2MSFTNGP09.phx.gbl...
> Would the above waittypes strongly correlate to IO ? Or could it also me
> memory ?
> I thought I had seen more info of these types out here
> http://sqldev.net/articles/wait_types.htm, but Gert is working on it I
> guess
> at this moment and the wait types that I was interested in have just what
> that waitype means and doesnt have more details.
> Does anyone know where I can find more about those waits ?
>