what does this mean and how long will this take?

it means that it will not track evryting like maps top 10 player...
dont know long it will take

Frequent scans are thought to be causing the servers do crash due to a bug in the binary. Once treyarch can patch the issue, stats will be back. Currently I believe it is querying the master server list so only limited info is available.

Any ideas why map names aren't showing up for me like the banners above? and no graph data at all.

I've had trouble with the servers too and my internet

What about the maps

when is the problem solved :"Call of Duty Black Ops is currently scanning limited information on all gameservers. "

since any days is this problem !

Any updates to when the servers will be tracked properly?

I am not aware of when Treyarch will have the frequent scanning crashes issue fixed.

The sooner the better:)