Well there is not a lot to go on here so lets start with some basics.
Does rebooting correct the issue?
How are you connected? Wired, Wireless??
Are you connecting using NAT (Network Address Translation) (are you behind a router such as LinkSys, DLink, 2Wire . . .)
Quote:
Date.......CPU..........Network Receiving...........Sending
Oct/08.....12%.........313.5Mib.........................10.5Mib
Oct/12......47%.........0.0 Mib...........................0.0 Mib ..... ( I have Internet)
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Where did you get this information?
You say you have internet, am I to assume it is just slow, but you can access any site, can you access anything normally?
What do you use for a browser?
What kind of hardware are you using? Desktop, Laptp??
from a prompt (either su to root or use sudo) take a look at the following commands. You can use man <command> for details on what the command does and what the output means.
top
(This will show what processes are running and what processes are using your CPU)
netstat
(This will show any active connections)
ifconfig
(this will tell about your network connections, IP address, connection speed . . .)
ping
(Can you reach a host such as google.com, and how long does it take)
tracroute
(Will show you the route data travels to get from point to point and the time it takes)
Take a look at these commands and their output, and give us more details about the problem, then perhaps someone here (or I) may be able to help further.