I can't always get the webduino samples running. Like Hello_world and web_demo. After I change my ip address to match my network (10.50.50.188 or something), I compile and it uploads well. Then sometimes I can get the web server to respond a couple or three times before it stops loading the page. The loading marker in Firefox just spins and the page loads for ever. Sometimes when the page loads at the beginning, it's mixed with "epic fails". Sometimes in this sequence, I can reset the mega board and then the next time I try to hit the page, it gives a big dump of what seem to be other runs that success or failed ( This is depicted in the attached Screenshot-2.png) and then stops responding again. Basically each sample code acts like this.
Wither way, it's completely unstable. Has anyone else seen instability like this? My setup is a Arduino Mega 2560 R3 and a Arduino Ethernet shield with an SD card inserted.