You are currently connected to the "unknown" gateway.

[#1]

On the which gateway tool: what does this mean? I'm currently experiencing low download speeds, I wonder if this is related?

[#2]

Check out this thread:
Unknown gateway
I'm on it at the moment and speeds are as normal.

[#3]

Cheers there - so perhaps interestingly quirky, but not necessarily a problem. Well, back to the drawing board regards speed. I'll keep an eye on that thread tho just in case I can glean something.