People with slow speeds over wifi should try disabling media sharing, as it bogs down the connection. No idea why Sony have never fixed that.
PSN content is hosted by Akamai who are a professional and widely used hosting company so no innate reasons for the speeds to be slower than on other services. However I think PS3 just doesn't play nicely with some routers.
PSN content is hosted by Akamai who are a professional and widely used hosting company so no innate reasons for the speeds to be slower than on other services. However I think PS3 just doesn't play nicely with some routers.