I have performed more testing and can further specify the problem I am experiencing.
Sleep Mode. The computer will go into sleep mode, but on waking will not reconnect to the internet (I have a direct cable 20mbs connection).
Power On / Power Off. The computer turns on and off without any trouble, and connects to the internet once on.
Thanks for the replies, and apologies for not updating this thread.
A day or so after I made the post, I chatted with an Intel Technician who said my problems were not uncommon with that release. I was given a link to a previous bios which I installed. Since installing a previous bios, no problems have been present and the original problems warranting the change in the first place have gone away, too.
Thanks for the replies.