I have been playing GW for 2 years now, no network issues, no nothing. Day before yesterday, I take a quest in Sifhalla, zone out to Drakkar lake and boom err 007. So I try again, same thing. I tried other zones and they work fine. So i started testing systematically, this problem I have is within the following zones: Drakkar Lake, Gunnars Hold and Sepulchre of Dragimmar. Mind you, I have not tested all of the available zones in the game yet, only a few in EoTN and NF.
So this is what I have tried so far:
1) ArenaNET initial help messages from support i.e. defragment page file, connect modem to computer, kill services etc etc. Obviously no difference was made. If I can play the rest of the game fine and only have issues in some game areas, this wouldnt have made a difference anyway.
2) Checked with my ISP. Connection with my ISP is fine and everything is A-OK, no blockage on their side and no switching of IP.
3) Did testing with ping plotter. All the routes go fine until I get to plaync.com domains where the packet loss goes to 100%

So now I am stumped, how is it that I am able to play the rest of the game with no issues and only have problems zoning into these areas? I have also reinstalled the client with no improvement.
Can anyone help?