| do you have a limited IP range setup on the router (in terms of DHCP).  This *might* explain some connection issues, though does not really explain why it is only you.
 I agree with Kurty - it sounds like it might be a power isse.  What other USB things do you have plugged in?  Can you take out anything not useful (for a test - even remove your mouse if it is usb and see if that makes your connectivity better...)
 
				__________________who hid my keyboard's PANIC button?
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