|It's extremely unlikely the traffic on their servers has anything to do with your problem, unless you know lots of people of people who use the same ISP and ALL of them (not some of them) are noticing the same thing. |
Your speed on the internet depends primarily on the max speed of the package you pay for, and what the capabilty of the servers for whatever web page you're connected to is and how much traffic there is to that web site at the time you connect. You DO NOT get the full rated speed from all web sites, and you don't necessarily get the same speed from any one web site depending on what the traffic to that site is at the time.
e.g. The Asus web site is frequently overloaded and terrible. I often get a much faster download speed downloading a mboard manual from Europe rather than the US.
Are you connecting by means of an ADSL or DSL connection, or a cable (coaxial cable) connection?
If you're connecting by means of an ADSL or DSL connection, the most likely cause of your problem is there's too much line noise on the telephone line you're using - it gets worse when more people are using the phone lines. When your connection is slower, sometimes you can hear the line noise when you pick up a phone (varies depending on which phone) on the same line , sometimes you can't hear it because it's beyond the range of human hearing. Phone whoever you pay for the phone line and tell them they need to fix that for you. If you can't get no satisfaction, if you can get a cable connection where the computer is, go for that.
If you're using a wireless G connection to connect to whatever connects you to the internet, you're a lot more likely to have connection problems. If you can connect via a network cable, your connection is a lot more likely to be better. If you're connected to a local area network that connects to the internet through a router, your connection is likely to work better if at least one network connection of the computers to the router is via a network cable, and/or if the standalone modem connects to the router via a network cable.
If you must use a wireless connection, wireless N (on both ends) is a lot more reliable than wireless G.