I guess so. Before i download the ultrasurf, i tried to use IE to surf sbf and it was damn slow and laggy. I cant even see the last post of every threads.
After downloading the ultrasurf and surf SBF with IE, there aint such probs as lagging or slow response anymore.
Some bros told me this ultrasurf is an overseas proxy which cant be detected by the local authorities. If you use local proxy sure very slow and lagging, be it starhub or singnet.