Qwt liveplot crash

[Myzhar]

Hi all,
I'm trying to use Qwt to plot accelerometer data @800Hz.
The application work, but it randomly crashes with error `double free or corruption (out)` while allocating data.

I use this code to update the plot:

void DataPlot::updateData( DataType type, QVector<double> ts, QVector<double> data, bool replot)
{    
    mData[type].mCurve->setSamples( ts, data );
 
    if(replot)
        this->replot();
}

void DataPlot::updateData( DataType type, QVector<double> ts, QVector<double> data, bool replot)
{    
    mData[type].mCurve->setSamples( ts, data );

    if(replot)
        this->replot();
}

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Where `ts` is the X axis, `data` is the Y axis and `mCurve` is a `QwtPlotCurve` curve.

Any idea or suggestion?

Thank you
Walter