I'm a Mod and I get this once in a while.
This is due to some troublemakers or spammers.
When you connect to the internet, your ISP randomly assign you an IP address. If MERB Admins realize a spammer or troublemaker often log from the same address, the Admin can ban that address on top of banning the user name. This prevents the problematic user to create a new user name.
Some people have a fixed IP address that never change but, most have a dynamic IP address. That's an address that changes with every connection of the modem. The problem with banning the address is, even if the spammer or troublemaker is gone, the next person who's assigned that IP by the ISP will get rejected also.
One way around this is to access your router and disconnect from the your ISP and reconnect after a few minutes. On ADSL, you are likely to get a different IP right away. Cable might take longer.
Techman would be the one to answer this more effectively, but typically a land broadband setup covers an entire area to access a "d-slam" unit. When you log on, the d-slam allocates one of the IP's in its inventory to fill your request for connection. Kind of like a traffic manager, since not everyone is supposed to be logged on at once.
Now, let's take a "theorical example" and say you live in Ottawa and have a manic tendancy to create multiple handles generally harrassing other posters and stalking the SPs to the point of terror. One of MERB's moderators may block the particular IP that is a common culprit of these "attacks" in order to protect the board from nut jobs. aznguy, I know this isn't you. However if one of the IP's banned is on your d-slam, this could explain it. My understanding is each typical d-slam has something like 30 or 36 IP's. So if a banned one sometimes comes up, it could be one that has been banned in such a fashion. On the good side, it's probably nothing personal.
I'm sure I've made some technical errors here, so Techman will come in after and clean it up a little.
aznguy, it isn't a matter of rebooting your computer, you have to disconnect your modem and reconnect. If you're on Videotron, or another cable ISP, that usually requires you to disconnect your modem from power because they usually don't have a power button, only a standby button which won't renew your ip. Unplug the modem, wait at least 5 minutes and then plug it back in. Go to this site before doing the reset and check your IP and then check it again after re-connecting to make sure it has changed. If it hasn't, do it again until it does.
http://www.whatismyip.com/