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

Client loss:                        0.009%
Overall IPv6 dualstack preference:  0.289%
- of which are 6to4:                3.474%
- of which are Teredo:              0.108%
- of which are other/native:        96.418%
Overall stats (with 10s timeout), 
last week (20110502 - 20110508):

Client loss:                        0.015%
Overall IPv6 dualstack preference:  0.289%
- of which are 6to4:                3.274%
- of which are Teredo:              0.106%
- of which are other/native:        96.621%