Pretty simple problem here: after changing an option and changing it back, I get this when I start up Konqueror:
A bit too small for anything useful. So... I'd like to change the default size to something larger. Is there a way to make Konqueror remember the window dimensions I typically use, or at least specify something larger than the current default?
In konqueror, go to Settings/Configure View Profiles. There's an option to remember window sizes. Enable that option and you should be able to resize the window to your liking, then go to Settings/Save View Profile and save whatever profile your using and it should remember the window size. If that doesn't work, I suppose you could use kwin's settings to force the konqueror window to a certain size.
Play with View Profiles (in Settings' menu).