[maxmsp] erratic find of basic objects

Hello

I have, well, I undergone rather a erratic behavior of Max (4.6.3)
on a Macbook pro (OSX 4. 10) since one year now. 
Sorry I posted already at this time but I don't find the thread.
So:
When I make a patch, and when I try to put some audio object
like line~ noise~ adc~, you see basic objects, Max don't find them,
and send a missing object message. Ok, to resolve it I have to do a second or a third try and then Max find it. But it is not every time, sometime there is no problem.
And it seems that I am the only one on thne earth to have this 
problem, so I feel alone. 
I would really like to resolve definitely this.

first, I wonder if I should not remove the files "C74 plug in support" from the library /Application support
Is those files still usefull with Max 4.6.3 ?
because the externals files is still in the Max folder

any ideas????

(yes I trashed the pref, and yes I repaired the auth., like a good boy, but it's seems to be a more vicious thing!!!)




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