IM convert doesn't finish

- I'm using GR / the slideshow applet in the version 1.5.1-b30
- Windows XP SP2 in
- Firefox 2 and
- imagemagick 6.2.9

When running the slideshow for an album with some jpg images, it keeps showing "Processing Image foo.jpg 1/2".
I see a stale convert.exe process in the task manager and kill it after one minute (the image isn't very large).

Then it shows the image in the slideshow and the message in the upper left corner is "Preparing Image bar.jpg 2/2" and it stays there.
After a minute I consult the task manager and see a convert.exe process and kill it.
The slideshow immediately shows the 2nd image thereafter.

I've used an advanced process explorer to see what the exact convert.exe call is that is stalling:

C:\Programme\ImageMagick\convert.exe -filter Lanczos C:\DOCUME~1\andy\LOKALE~1\Temp\thumbs-andy\server1092281090.jpg -resize 1400x1050 +profile * C:\DOCUME~1\andy\LOKALE~1\Temp\thumbs-andy\thumb-2046200866.jpg

And indeed, if I execute this command (with different filenames) in the command line, it consumes tons of memory and applies the conversion to all files in the current dir (and with some errors).

If I remove "+profile *" from the command, it works.

Not sure if +profile * needs to be in quotes, I'm also not sure if that's the real problem since that might just be a Java vs command line issue.