Ubuntu 10.04/x86 Netbeans 7.1.1
When "auto start process after program is loaded" is enabled, stepping doesn't work when debugging. When "Step Over" or "Step Into" is invoked, it just continues executing the program freely, until it completes or hits a breakpoint. Breakpoints do work.
This seems related to http://netbeans.org/bugzilla/show_bug.cgi?id=202153, which is marked as fixed.
Disabling "auto start process after program is loaded" seems to fix it.
look more like bug 200196
*** This bug has been marked as a duplicate of bug 200196 ***