Anyway, this is not an information we can rely on.

I notice many blocks pretending to be version 2 but showing bad height encode values

See
http://blockexplorer.com/block/00000000000005d024e86337ca13439b7f3dbd5e1a005b1dbe510150d45b6e98 is block 200433 and pretends to be 436591499
http://blockexplorer.com/block/00000000000003c6947e260dc80d6ab426771a7ba9d8d5fb58ff66a0db26c361 is block 199914and pretends to be 436591499

May be such blocks must not be accepted by the network as the BIP34 is now enforced?