diff -ruN nedit.orig/source/window.c nedit/source/window.c
--- nedit.orig/source/window.c	2008-03-03 23:32:24.000000000 +0100
+++ nedit/source/window.c	2009-01-21 13:41:14.000000000 +0100
@@ -145,6 +145,9 @@
    0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x84, 0x01, 0xc4, 0x00, 0x64, 0x00,
    0xc4, 0x00, 0x84, 0x01, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00};
 
+/* ThOr: svrname in WM_CLASS hack */
+static const char* def_wmclass = "textShell";
+
 extern void _XmDismissTearOff(Widget, XtPointer, XtPointer);
 
 static void hideTooltip(Widget tab);
@@ -388,8 +391,21 @@
         XtSetArg(al[ac], XtNy, XT_IGNORE_PPOSITION); ac++;
     }
 
-    winShell = CreateWidget(TheAppShell, "textShell",
-                topLevelShellWidgetClass, al, ac);
+    {
+        /* ThOr: I want different WM_CLASS for different servers */
+        char* wmclass = NULL;
+        if (GetPrefServerName()[0] != '\0')
+        {
+             wmclass = (char*) malloc(sizeof(char) * (strlen(def_wmclass)+strlen(GetPrefServerName())+2));
+             wmclass[0] = 0;
+             strcat(wmclass, def_wmclass);
+             strcat(wmclass, ":");
+             strcat(wmclass, GetPrefServerName());
+    	}
+    	winShell = CreateWidget(TheAppShell, wmclass == NULL ? def_wmclass : wmclass,
+                                topLevelShellWidgetClass, al, ac);
+        if(wmclass != NULL) free(wmclass);
+    }
     window->shell = winShell;
 
 #ifdef EDITRES
@@ -2479,7 +2495,8 @@
     	WidgetList tabs;
 	int tabCount;
 	
-	if (strcmp(XtName(children[n]), "textShell") ||
+	/* ncmp for possible textShell:svrname */
+	if (strncmp(XtName(children[n]), def_wmclass, 9) ||
 	  ((topWin = WidgetToWindow(children[n])) == NULL))
 	    continue;   /* skip non-editor windows */ 
 
@@ -3507,7 +3524,8 @@
 	
 	/* get list of tabs in all windows */
     	for (n=0; n<nItems; n++) {
-	    if (strcmp(XtName(children[n]), "textShell") ||
+	   /* ncmp for possible textShell:svrname */
+	   if (strncmp(XtName(children[n]), def_wmclass, 9) ||
 	      ((win = WidgetToWindow(children[n])) == NULL))
 	    	continue;   /* skip non-text-editor windows */ 
 	    

.