I made a slipstreamed XP SP3 with nLite. After a clean install, My download speed decreased dramatically. All download actions in browser, download managers and etc. are limited to 2.5 ~ 2.7 KB/s. I used many utilities such as CableNut. The Web surfing speed improved but download is slowdowned. Many suggest me to back to SP2. Is there any way to increase download speed or must back to SP2?