> Why not keeping on working on bug #578864 to which I attached a stacktrace and a valgrind log ?
because bug #578864 is the same issue than the one described and fixed there and that would email spam the submitter with comments discussing your issue which is a different one, it would also mix several issues on that bug and make it harder to work with, would be easier to open a new bug with updated stacktrace and valgrind logs with current updates installed
> Why not keeping on working on bug #578864 to which I attached a stacktrace and a valgrind log ?
because bug #578864 is the same issue than the one described and fixed there and that would email spam the submitter with comments discussing your issue which is a different one, it would also mix several issues on that bug and make it harder to work with, would be easier to open a new bug with updated stacktrace and valgrind logs with current updates installed