[PD] raspberry after boot 2 instances of Pd

[rolfm at dds.nl]

hello,

(for me) strange problem of double instances of Pd.

raspbian jessie Pi-3, headless, VNC on laptop.

in /.config/LXEsession/autostart:
@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@puredata

after boot in Terminal command 'top':

   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ 
COMMAND
  1105 pi        -7   0   12632   5992   5292 S   1.7  0.6   0:00.57 
puredata
  1106 pi        -7   0   12632   6104   5404 S   1.7  0.6   0:00.57 
puredata
   938 pi        20   0   12544   8224   3428 S   1.0  0.9   0:00.63 
Xtightvnc
  1399 pi        20   0    5112   2544   2140 R   0.7  0.3   0:00.10 top
   903 root      20   0   98104  25936  18128 S   0.3  2.7   0:00.47 Xorg
  1100 pi        20   0   94364  24608  20920 S   0.3  2.6   0:00.59 
lxpanel
  1101 pi        20   0   94188  24776  20972 S   0.3  2.6   0:00.68 
lxpanel
......


there are 2 instances of puredata (and also 2 lxpanels)!
and only one GUI visible on screen.

when i close the GUI, 1 Pd instance disappears, 1 remains (and a WISH).

without puredata in autostart there's only 1 lxpanel.

anybody experience with this?

is there better way to get Pd automatically started at boot?

rolf