Here's a funny thing: Maemopad+ (or Maemopadplus as it is called in the repositories) doesn't show up in my Application Manager. I am 5,000% certain that I filled the repository details in correctly (http://repository.maemo.org/ mistral free), but all I can find in the list of applications is "Maemopad", which is a plain-texteditor.

When I try to install the file (maemopadplus_0.23_armel.deb) manually (I already have the sqlite libraries installed), it is not recognized as an installable file.

So: Huh?

I noticed that too... But I was able to install successfully from the manual download.
Try redownloading?