It's come to the point where I am without internet more than I am with. i.e. it's down most of the time. It goes like this: I can surf for 30 seconds, then I have to wait for a minute.
It's terrible.

I now have the LAN cable plugged in, but that doesn't improve it.
Edit: Right now it's more like 10 seconds of internet, 2 minutes without it.
Also, am I supposed to have more than 8GB of temporary files?