problem interfacing parallax GPS

hello,

I'm using the following code to interface the parallax GPS and added some code to display the coordinates on an lcd.(Arduino Playground - GPS)
At the beginning, it was working fine but now it always gives the same coordinates. At the serial monitor I can see there is still coming data through the serial line.
Anyone who can help me?

Thanks,

Jens

Post your code. Some details about what you see in the serial monitor might help too.

Perhaps it lost acquisition... Leave it to reacquire for 5mins or so in the open where it can see lots of sky