Used to happen to me, until I hooked my PS3 up with a LAN cable instead of using wireless.
That was a good decision.
I've never used a wireless connection for the PS3, and I've never had the acute "online difference" like other people describe, nor any of the connection or grid starting problems that other people talk about.
Getting kicked back to the GT Life screen definitely sounds like some kind of connection issue. (Unless I'm wrong and it's some new network problem with the new network, I don't know.)
Some people say clearing your network cache in GT5 is helpful.
Others say it's a good idea also to reboot your ps3 before online racing.
I say the best things you can do is
First, if you're using wireless, switch to a hard wired network cable.
We use a Cat 6 network cable.
If you have a cord from the DSL wall outlet to your router, make sure that's in good condition, not very old, and not being pinched anywhere.
Make sure your router is in good condition too. They DO wear out, corrode, etc.
Check your wall outlet. If the jack gets corroded (green - oxidization), it's going to cause lower connection. You can't always see it well what's going on inside there.
The more humid it is in your house over time, the more likely it is to happen. But it just happens over time because it does - it's natural. If your wall jack is older than you know, it might be time to replace it.
The problem with this corrosion is that at the start of the degradation, it could cause INTERMITTENT lowering of connection. In other words, sometimes you can check your connection time, and it'll be just fine so you
think your connection is good & fast. But intermittently, it could be shorting and causing the connection to be slow or even stop for moments at a time. And you may not even realize it, except that your having troubles & you don't know why.
Until the corrosion gets so bad your connection times are always lower, and finally you're barely connecting at all & calling the technician to find out why.
