I have two points to mention:
1st, during the last days the speed of the redhat linux server isa really impressively good according to the past. I don't know what you did, I read some in the news, think this is related to the cleaning and watching over the server.
2nd, evernight from 10:00 CET, 00:00 GMT+2 the speed is outstanding. So do really the servers in polarhome have their own rush hour?