Wierd Lag and DC.

I had a similar problem actually. If I were to enter a map with no one else in the map before i got to it, I would have a long lag, then disconnect. This started happening immediately after Nexon's System Maintenance. Even with someone in the map though, I would lag out after about 20-30minutes. Nothing I could do to my computer would fix it. Scanned for viruses/spyware, defragmented, system restored, updated Windows/drivers, ran disc cleaners, and eventually reformatted. After having sent Nexon 2 tickets to ask for their help, I gave up and decided it was time for a new computer anyway, seeing as mine was 5 years old as it was. I was running XP, 1GB RAM, 512MB nVidia Geforce 8500 graphics card, and am on broadband. The first reply from Nexon was a huge list of problems people had with patch .56, but my problem wasn't listed so I sent the next ticket. This time they told me to read their FAQ, and thats all. Their FAQ contains nothing that would help.
I do believe it has something to do with Nexon's servers, but they didn't seem to care too much when I was trying to get help from them.