Define Statements in SQL Developer

Hi,
I'm really new to SQL Developer and I'm having one or two issues.
The most annoying is to do with Define statements.
Say I have the following script to run -
define p_start_date = TO_DATE('01-Jan-2010','DD-Mon-YYYY');
SELECT &&p_start_date
FROM dual;
What I find is that putting the cursor before the first define and then hitting the 'Execute Statement' button does nothing. No output is given.
I have to press the 'Run Script' button instead which does work, but the output is given in the 'Script Output' tab rather than the 'Results' tab, which is where I really want to see the results.
I can then however, go back and press the 'Execute Statement' button, and it now works. But, if the define date is changed, it wont be picked up until I press 'Run Script' and go through the whole process again.
Is there anyway I can just open a file with a define, press Execute and get results? Or is this just how SQL Developer works?
I'm on version 1.5.1 and previously used SQL Navigator which ran this type of issue without any problems.
Thanks for any help.

The problem is in understanding what each does:
'Execute Statement' (F9) executes only the current statement(s); where the cursor is located or the one(s) you have highlighted.
'Run Script' (F5) executes all statement(s); from top to bottom or the one(s) you have highlighted.
So what you describe is the expected behaviour.
I do suggest you upgrade to the current 2.1.1 (or 3.0 EA3), for fixes and the ability to run more than one selected statement with F9, even to different grids.
Have fun,
K.

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>
So, it would appear that this is a bug, but I'm not sure.
>
That would be a bug. Thanks for reporting it and providing the detailed example.
>
Is there a way I can configure the export options to make SQL Developer export these statements like it used to in older versions?
>
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