Re: Change screensaver to photo slideshow(?)
Thank you very much, Toz; I appreciate your help and consideration.
I continued googling the problem and arrived at http://a1.blogspot.com/2012/04/ubuntu-1204-explained-setting-up.html
and followed the directions (which included installing kdelibs-bi, kdelibs5-data, kdelibs5-plugins).
So now, xscreensaver works like I wanted it to.
AMD Athlon II X2 220 Processor × 2 , 2.8 GHz, 6 GB, Nvidia PNY 210, 1 TB hdd: Windows 7; Ubuntu 13.10; Linux Mint 16 Petra. // Gateway E4000, Intel Pentium 4, 1.8 Ghz; 1.0 GB RAM, Geforce 5500; 32 bit; Windows 7, PCLinuxOS 201404 Mate Desktop.