Yes. It appears to be a permissions problem. The easiest solution will be to delete the cache folder that is under each gallery folder in the /images directory. I've started to do that and it appears to solve the problem.
By deleting that directory through ftp it causes the system to re-create the folder the next time the gallery is viewed. It is a good idea to clear out those folders periodically anyway. Once they are deleted, they will be recreated with the correct permissions and everything should start functioning properly.
Did this help? Tips are appreciated...
