Rezzing issue that seems to be localised to my sim??

Not sure if this is a problem with 1.7 overall, or just how it has affected my sim. After I log-in at my home, nothing rezzes, not even my avie. Stood there for nearly 2 hours yesterday and nothing rezzed in at all in that time. Though I can see the map, chat in IM, etc. Figured it was just 1.7 settling-in blues and would fix itself.
Tried again this morning, and again nothing rezzes in, not even my avie, so I have no idea where I actually am in relation to the rest of the grey, semi-transparent world around me.
Then a friend tp'd me over to their place to see if it was my end or my sim. Almost as soon as I got to where I had been tp'd to, I rezzed in. Still had minor issues with things in the distance not rezzing, but otherwise was fine.
Went back home after a while, and again nothing rezzed, my avie disappeared, and all around me was just a grey semi-transparent blob.

Not sure what the problem is, but at the moment it has made my home unusable, and unless a friend is on to tp me somewhere, I never rez at all.

Not sure if the issue of rezzing in my sim is fixed with the 1.7.0.53 build, my avie did actually appear to rez in somewhat, just before my modem disconnected.
Now I am getting modem disconnects within minutes of logging in. Exit SL, modem reconnects, login to SL, modem disconnects. Not running through a router or anything else, and have a cable connection.