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

Client loss:                        0.007%
Overall IPv6 dualstack preference:  0.072%
- of which are 6to4:                16.062%
- of which are Teredo:              0.442%
- of which are other/native:        83.496%

Overall stats (with 10s timeout), 
last week (20110502 - 20110508):

Client loss:                        0.012%
Overall IPv6 dualstack preference:  0.072%
- of which are 6to4:                15.369%
- of which are Teredo:              0.436%
- of which are other/native:        84.195%