after upgrade, thumbs moved?!

[drhcanada]

This may have been answered but not that I could find in English.
I just updated from 2.2.1 to 2.2.3 and when I went back to the gallery all the thumbs where out of position in firefox only.
they seem to still display correctly in IE 7.

I included a picture to show what its doing. thanks for any assistance

pictures.jpg

[drhcanada]

solved it.
it was a result of the CssJsCompress software I was running on the site to join the various css files into a single file