Works fine for me - 188.8.131.52.64 even on Win XP
Workaround: Use a parallel hint!!
Workaround - use a current version of Sql Developer
When you post you need to provide ALL of the info about the sql developer version you are using and any other relevant environment issues.
You didn't even say you were using Sql Developer and that link is to an issue reported for version 1.5.1
Download/install the current release of Sql Developer and post the results of repeating your test using that version.