When using the Frysk source window to "Run executable...", the frysk mechanism ofManager.host.requestCreateAttachedProc is used to start the new task. If you do a "ls -la /proc/PID/fd" on the task that you executed you will see that all of the file descriptors of Frysk are now part of the new task task. There is supposed to be a way of actiavting a task and having all of the extraneous fd's closed when the task is forked/execed.
This appears to be fixed thanks to some of Nurdin's file descriptor leak fixes.