I am using 0.5.3 and no crashes.
I'm using the Carousel view with success. I like the way it works.
No other Thickbox or Lightbox plugins are activated. Only Lazyest Gallery and Lazyest Slides.
However, I have given up on Thickbox. When I check "Use Lazyest Thickbox popup" in the 0.5.3 settings and "Show Slide in Thickbox" in the Lazyest Gallery settings, I just get a grey, translucent window with an "X" in the upper right that shows no image.
So, when you look at my gallery you will be seeing the result of the following selections:
Lazyest Gallery: "Show slide in slide view" and "Show image in popup window"
Lazyest Sldes: "Carousel" WITHOUT the selection of "Use Lazyest Slides Thickbox image popup"
Personally, I don't really care if Thickbox works. I like the Carousel/Popup Window combination.
By the way, I am using the LG Random Image widget with success.
Thanks for your help.
You can view my gallery at http://philoqualia.com