There seems to be a new feature/bug in IDL 8.3, when using the PLOT routine with axis-labels that are typeset as exponentials. In older IDL versions (in my case IDL 8.2), the exponential was typeset as a number, a bullet (•) and then the exponential, e.g. '1.0•106'. Since IDL 8.3 it is typeset as a number, a times-symbol (×) and then the exponential, e.g. '1.0×106'. As a consequence it seems that all following text is in the greek font. However, this seems to be only the case when plotting to a PS file and when using the device font. A minimal working example is the following: !p.font = 0 set_plot, 'PS' device, file='idl.ps' plot, [0.,1.], [0.,1.e6], /nodata xyouts, 0.1, 0.2*!y.crange[1], 'This text now uses the greek font.' xyouts, 0.1, 0.5*!y.crange[1], '!3This text is again in the normal font.' device, /close Is there any way to avoid this behaviour?