[OSM-newbies] Strange rectangular blue areas

[topo at joelertola.com]

Hi all,

I have been working mostly on Manhattan's West Side Highway. Adding  
connecting details and oneway street directions. I also edited  
Manhattan's coast line to add more detail.

I thought I needed to wait until Wednesday to see the results of my  
work. But I just found out that I can see what I have done in the  
Osmarender base layer.

I noticed something real bad when I looked. There are big rectangular  
areas of blue covering a lot of land:
http://www.openstreetmap.org/?lat=40.7891&lon=-73.9939&zoom=12&layers=0BFT

Is this a problem that I might have accidentally caused? Or is it some  
Osmarendar rendering problem that has nothing to do with me? If I  
caused this can I fix it?

-Joe Lertola