Hi,
regarding the thumbs, can you find which permissions the thumbs have or try to set permissions to the thumbs, or try to generate new ones again, as you can see i have no clue.
In general a classical blog is using posts categories for daily thoughts and you can browse through them by category or the archive, pages are more for the purposes of the classical website.
I dont know why theres no album shown dont see a trace of the expected code.
Regarding the different sizes: this is not easy as the resizing is globally set as an option as the columns are too.
And what i was talking about height is not about resizing pics but giving them a uniform container with a fixed height around them to bring order to the look. Problem is you have to take the highest pic as a measure, advantage you can get rid of columns as even only two are to much for 500 width.
This fixed height could be individualised a little bit more but only to the point of having it per gallery as this would have to be made possible by calling an altered copy of the gallery-gif.php.
To try this the first step would be to put a copy the file "nggallery.css" thats inside the "css" folder of ngg inside your themes folder (this to keep changes after updating ngg) and then alter it by looking for .ngg-gallery-thumbnail-box {
and put a height eg height:300px; inside the brackets.
best regards
bee