Why are there more silvers than golds in this olympics ?

Question

Currently in the tally of medals won , the count of the number of golds won is 1 lower than the number of silvers won. The higher number of bronze medals can be explained by the award of the medal to both losing semi-finalists in a few sports . But aren't the number of golds supposed to equal to the number of silvers? (this is in the context of the Beijing Olympics)

Answer 1

Because one of the women's athletic races was a dead heat for second and two silver medals were awarded.

Answer 2

there must have been a dead heat for silver

Answer 3

Sherone Simpson and Kerron Stewart (both Jamaicans) finished in a dead heat for silver in the women's 100m, Fraser, their teammate took gold.