I dont know why you guys are complaining so much . If i'm not wrong i believe this is an offshore RDP, thats why you dont get good upload speeds to Fileserve and hotfile.
Try uploading to Rapidshare, add 5 connections and each will give you 5MB per file.
As Hotfile, Mediafire, Megashares and fileserve are located in the US, you wont be able to get good speeds there.
But European hosts like, Rapidshare, Filefactory, shareflare etc will give you very good speeds.
About the rar/unrar. As this is a new RDP, so many users will be using this at the same times during the first month or so, after that everything will be sorted out.
But really, if you start 5 winrar processes, 5 filezilla and 5 IDM, then naturally everything will be slowed down. Remember this is a shared RDP, everything is dependent on the overall usage by the customers.
get a dedicated VPS and do whatever you want with that, it'll give you much better speeds