Sorry Linden lab..... but who is the avatar (???) (???)? his profile no exist

[Rolig Loon]

Is it you?  Someone on your Friends list?  A tag over someone's head?  Usually the answer is that you are not fully connected to SL's servers.  As you log in or change sims, the servers in the new sim attempt to grant you "capabilities", which means basically that your viewer may access various databases for information about friends, groups, inventory, etc.  You may get an error message (and often a crash) if the attempt fails completely, but you might also just find that some services don't work.  You can try teleporting to a different sim and back or relogging to see if that helps.  If you're on wireless, get rid of it and use a direct LAN cable.  You might also need to amend your router's list of DNS servers by adding the Google DNS servers or others from this list. 

[Rolig Loon]

Is it you?  Someone on your Friends list?  A tag over someone's head?  Usually the answer is that you are not fully connected to SL's servers.  As you log in or change sims, the servers in the new sim attempt to grant you "capabilities", which means basically that your viewer may access various databases for information about friends, groups, inventory, etc.  You may get an error message (and often a crash) if the attempt fails completely, but you might also just find that some services don't work.  You can try teleporting to a different sim and back or relogging to see if that helps.  If you're on wireless, get rid of it and use a direct LAN cable.  You might also need to amend your router's list of DNS servers by adding the Google DNS servers or others from this list. 

[Knowl Paine]

You must be really good at charades... is it an animal element of object..lol

[Nalates Urriah]

Rolig is right. Said another way, the ??? indicates the viewer is not getting the name information it needs. That can be because a server is having problems, is busy, or your connection to SL is poor.

Having a good Internet Connection is not the same as having a good connection to SL.

You can't do much about checking the backend services of SL. But, you can test your connection to SL to see if something needs to be tweaked or fixed. See: Troubleshoot Your #SL Connection.