Taken from upstream: http://htop.svn.sourceforge.net/viewvc/htop/trunk/Settings.c?view=patch&r1=286&r2=285&pathrev=286

Don't delete an old .htoprc if it's a symlink.

--- trunk/Settings.c	2012/02/17 13:45:58	285
+++ trunk/Settings.c	2012/03/05 11:12:58	286
@@ -239,7 +239,9 @@
       mkdir(htopDir, 0700);
       free(htopDir);
       free(configDir);
-      if (access(legacyDotfile, R_OK) != 0) {
+      struct stat st;
+      lstat(legacyDotfile, &st);
+      if (access(legacyDotfile, R_OK) != 0 || S_ISLNK(st.st_mode)) {
          free(legacyDotfile);
          legacyDotfile = NULL;
       }