Here is a quote on keeping connected--
"There are a few things you can do to keep your DSL connection active or reduce the number of times you have to reboot. The easiest thing you can do is to manually disconnect from the Internet when you are going to be away from the computer for a while. By manually disconnecting your PPPoE session, you eliminate the chance that the link will fail or become corrupt when the PC enters a standby mode. This gracefully shuts down the connection, clears your user information from the ISP, and releases the IP addresses assigned via DHCP in an orderly manner. And although this does negate the always-on feature of your DSL, it at least provides you with a better chance of resuming your connection and getting back online without rebooting the entire system.
Another way to avoid the hassle of shutting down your connection manually or rebooting after each standby session is to start using a DSL-ready router. There are a number of reasons why a router is a good choice for your DSL connection, the first of which is that it is physically removed from your computer. Most DSL routers support PPPoE natively so they can be in complete charge of your Internet connection. This presents a great advantage when your computer is part of a LAN. And, in this case, you'd place your DSL router between your PC/LAN and your DSL modem. The router connects to your LAN via Ethernet. Also, the router can have a 10/100Mbps (megabits per second) Ethernet hub built in, or it may require one separately. So, an arrangement such as this would involve: DSL from your ISP, which connects to your DSL modem, which connects to your DSL router, which connects to your Ethernet hub, which then connects to your PC."
Here is a quote about hibernation--
"The advantages of hibernate are that it uses no power (especially valuable when a notebook is running on battery power), leaves no noisy fans running, and (unlike standby) doesn't lose anything even if there's a power failure before you return to the computer and restart it. A minor disadvantage of hibernation is that it requires a moderately large chunk of your hard drive (even temporarily), roughly the equivalent of your system's RAM.
Theoretically, there's no reason you couldn't select the Hibernate option every time you turn off your computer, but we wouldn't recommend it. When you restart from hibernation, your computer is simply reawakening. Unlike restarting from a normal power-off, any minor problems in memory allocation are also restored. Your computer doesn't get the clean-slate effect that it gets from fully shutting down and restarting Windows. For similar reasons, we wouldn't recommend putting your computer on Standby 365 nights per year. It's good to completely shut down and reboot your computer occasionally. Although it's not supposed to happen, programs sometimes grab areas of memory they're no longer using and hang on to them. This is called a memory leak. Such leaks and misallocations can cause the computer to slow down, issue error messages, make errors, lock up, or crash. Restarting creates a clean-slate condition, wiping out these memory misallocations."
Edited by medab1, 06 July 2006 - 08:52 AM.