Issues with Slackware KDE3 packages came up after I updated the repositories in gslapt to upgrade Gimp to version 2.8 (which, ironically, I found less desirable than version 2.6) The menu changed and certain applications misfired.
Unless someone can tell me how to resolve this, if I continue to use Vector 7, my choice seems to be between running KDE3 and using Gslapt.
Would running Trinity packages instad of original KDE3 resolve this? Possibly. The main difference between Trinity and native KDE3 packages is that KDE3 is built to not conflict with KDE4. This means that Trinity's version of konsole is named "kde3-konsole. I've always found the added prefix a bit of a bother, so I prefer the older packages, but it might avoid conflicts with whatever dependencies I initiated when I installed new packages.
I may try reinstalling with trinity packages, but I already know that the unsupported KDE3 packages still run beautifully with Slackware 13.37, and if I'm going to give up what I consider the primary advantage of Vector Linux, gslapt and the repositories, I might as well go full Slackware. That's what I'm leaning toward now. Or I might just stick with Vector and settle for XFCE. I may prefer one Desktop environment over another, but when you get right down to it, all Desktop environments work. Sometimes I think we spend way too much time thinking about and discussing where to put the buttons that launch the applications.