Netbeans 3.2.1 build 98, JDK 1.3.1_01
when running debugger in Netbeans 3.2.1 on a Pentium IIIM 1.13 ghz running 
Windows XP professional and a month-old build of JDK 1.3.1_01, output window 
did not properly output results of System.out.print() call, or echo input to 
the window after reading it from the input box.  The program I was debugging 
had two threads, one doing all the work and user-interaction, and one listening 
on a TCP ServerSocket.  The UI portion would present a prompt, then let the 
user enter commands.  The prompt was generated using System.out.print().  It 
looks like there is code in the output window to only flush the output buffer 
to the display on newlines.  The prompts would eventually be displayed, once a 
System.out.println() was called, but not before.  The input I entered was never 
echoed on the output window, and the readline's end of line was not counted, 
and so did not progress the output cursor to the next line, making reading and 
parsing the output very difficult.  Input and output worked fine from the 
Windows XP command prompt.  This issue was accompanied by other issues that 
were much more difficult to reproduce consistently (and I quit debugging in 
frustration instead of fleshing them out so I could report them), including the 
step over button beginning to have the effect of continuing execution instead 
of going to the next statement, and multi-threaded access exceptions ( I am on 
a different computer, or I would list the exact exception - it only takes a few 
executions to incapacitate the debugger ).  I did at times use the stop 
execution button to stop the process I was debugging in the middle of its 
execution.  This was necessary sometimes when the debugger would, after I 
clicked the continue button, go away and never come back.  I could, of course, 
not see whether a new prompt had displayed or not, so I would type a few lines, 
see no response, then stop the process.  The debugging process's thread also 
committed an illegal operation in Win XP three times in a 6 hour span, 
prompting windows Xp to report to the Microsoft mothership with a bug report.