Ubuntu user defaults save location?

Dos any one know where the user defaults are saved for ubuntu? Runing 9.04 64 bit ubuntu and 64 bit blender 2.49a for ubuntu.

Depends what you mean by user defaults.

There is Blender’s User Preferences - pull down the top menu bar, it is hidden above it.

Perhaps you mean the default .blend ?
Try looking in your /home directory for the hidden file .B.blend

if you mean interface defaults that you save with ctrl+U , there is a file called .B.blend that keeps your settings.It located in your home folder(/home/your name/).if you can’t see it press ctrl+h to show hidden files.
There’s also a folder called .blender which is your settings and scripts folder.