which voyager? Theres lots of different models.
I know the 205 (and a lot of others) runs pretty warm to the touch and this is normal with that router, and doesnt seem in any way to affect performance.
>> It's a 2Mb connection - what would be the range of stats that would be 'normal' and 'acceptable'?
Are your sure its a fixed 2Mb and hasnt recently been upgraded to max, which could be causing the problems now? If it is fixed then attenuation should be below 42dB and because fixed and max work differently, SNR Margin shouldnt really fall below 6-10dB on a fixed line... 12dB or above is good.