In lesstif-0.88.1-3.i386.rpm, lesstif-1.2-devel-0.88.1-3.i386.rpm, lesstif-2.0-devel-0.88.1-3.i386.rpm, the dynamic library files are distibuted incorrectly. The runtime lib libXm.so.1 is in "devel", whereas the linker lib (symb. link) libXm.so is in the non-devel package, at least for the 1.2-compat-libraries. It's confusing to have to install the devel packages to get runtime functionality. (Everything seems okay for the 2.0-compat-libs, but I have no packages which require them anyway...)
In the next release I'll state in the description section of the 1.2 libs that it includes the runtime libraries as well, this was an oversight on my part.