--- top.c
+++ top.c	2008-12-10 16:28:41.000000000 +0100
@@ -2993,7 +2993,7 @@ static proc_t **summary_show (void)
    p_table = procs_refresh(p_table, Frames_libflags);
 
    // Display Uptime and Loadavg
-   if (CHKw(Curwin, View_LOADAV)) {
+   if (CHKw(Curwin, View_LOADAV) && (Screen_rows > Msg_row+2)) {
       if (!Rc.mode_altscr) {
          show_special(0, fmtmk(LOADAV_line, Myname, sprint_uptime()));
       } else {
@@ -3010,7 +3010,7 @@ static proc_t **summary_show (void)
    }
 
    // Display Task and Cpu(s) States
-   if (CHKw(Curwin, View_STATES)) {
+   if (CHKw(Curwin, View_STATES) && (Screen_rows > Msg_row+2)) {
       show_special(
          0,
          fmtmk(
@@ -3024,21 +3024,29 @@ static proc_t **summary_show (void)
 
       if (CHKw(Curwin, View_CPUSUM)) {
          // display just the 1st /proc/stat line
+         if (Screen_rows <= Msg_row+2)
+            goto skip;
          summaryhlp(&smpcpu[Cpu_tot], "Cpu(s):");
       } else {
          int i;
          char tmp[SMLBUFSIZ];
          // display each cpu's states separately
+         if (Screen_rows <= Msg_row+Cpu_tot+1) {
+            show_msg("\aSorry, terminal is not big enough\n");
+            TOGw(Curwin, View_CPUSUM);
+            goto skip;
+         }
          for (i = 0; i < Cpu_tot; i++) {
             snprintf(tmp, sizeof(tmp), "Cpu%-3d:", smpcpu[i].id);
             summaryhlp(&smpcpu[i], tmp);
          }
       }
    }
+skip:
 
    // Display Memory and Swap stats
    meminfo();
-   if (CHKw(Curwin, View_MEMORY)) {
+   if (CHKw(Curwin, View_MEMORY) && (Screen_rows > Msg_row+3)) {
       show_special(0, fmtmk(MEMORY_line1
          , kb_main_total, kb_main_used, kb_main_free, kb_main_buffers));
       show_special(0, fmtmk(MEMORY_line2