I recently tried out gnucleus, and I like it so far. Two suggestions though.

First, it would be nice if there was a preferences option for the location of the temp directory. As it is now, temp files are placed either in the gnucleus/temp directory or in the downloads directory.

Second, I'd like to see a customizable search filter for each search you run, like in Xolox and some other clients. I like having the filter preferences to always filter out certain file types, but as it is now, you'd have to ad in the file extension in the search. Its no so bad if you're looking for one specific one, but if you're looking for a video file, you'd have to run a search for each extension. Just a pull down menu with All Files, Video, Music, Images, etc. would be fine.

Thanks.
Shawn