Overall stats (without timeout), 
last week (20110502 - 20110508):

Client loss:                        0.002%
Overall IPv6 dualstack preference:  0.257%
- of which are 6to4:                0.434%
- of which are Teredo:              0.136%
- of which are other/native:        99.430%
Overall stats (with 10s timeout), 
last week (20110502 - 20110508):

Client loss:                        0.005%
Overall IPv6 dualstack preference:  0.257%
- of which are 6to4:                0.185%
- of which are Teredo:              0.133%
- of which are other/native:        99.682%