This patch should fix memory leaks in tray-monitor.
 Apply the patch to 1.36.2 with:

 cd <bacula-source>/src/tray-monitor
 patch -p0 <1.36.2-tray-monitor-memleak.patch
 make
 ...

Index: tray-monitor.c
===================================================================
RCS file: /cvsroot/bacula/bacula/src/tray-monitor/tray-monitor.c,v
retrieving revision 1.19
diff -r1.19 tray-monitor.c
36a37,38
> #define TRAY_DEBUG_MEMORY 0
> 
50d51
< static POOLMEM *args;
135a137,157
> int sm_line = 0;
> 
> #if TRAY_DEBUG_MEMORY
> gpointer smt_malloc(gsize    n_bytes) {
>    return sm_malloc("GLib", sm_line, n_bytes);
> }
>   
> gpointer smt_realloc(gpointer mem, gsize    n_bytes) {
>    return sm_realloc("GLib", sm_line, mem, n_bytes);
> }
> 
> gpointer smt_calloc(gsize    n_blocks,
>                     gsize    n_block_bytes) {
>    return sm_calloc("GLib", sm_line, n_blocks, n_block_bytes);
> }
> 
> void     smt_free(gpointer mem) {
>    sm_free("Glib", sm_line, mem);
> }
> #endif
> 
142a165,175
> #if TRAY_DEBUG_MEMORY
>    GMemVTable smvtable;
>    smvtable.malloc = &smt_malloc;
>    smvtable.realloc = &smt_realloc;
>    smvtable.free = &smt_free;
>    smvtable.calloc = &smt_calloc;
>    smvtable.try_malloc = NULL;
>    smvtable.try_realloc = NULL;
>    g_mem_set_vtable(&smvtable);
> #endif
>    
154d186
<    args = get_pool_memory(PM_FNAME);
255c287
<       g_assert((xpm_generic_var[i] = (char*)g_malloc(strlen(xpm_generic[i])*sizeof(char))));
---
>       g_assert((xpm_generic_var[i] = (char*)g_malloc((strlen(xpm_generic[i])+1)*sizeof(char))));
412a445,448
>    
>    g_source_remove(timerTag);
>    
>    sm_line = 0;
422d457
<    free_pool_memory(args);
429a465,468
>    
>    gtk_object_destroy(GTK_OBJECT(window));
>    gtk_object_destroy(GTK_OBJECT(mTrayMenu));
>    term_msg();
430a470,473
> #if TRAY_DEBUG_MEMORY
>    sm_dump(false);
> #endif
>    
534c577,581
<    GtkTextBuffer *newbuffer = gtk_text_buffer_new(NULL);
---
>    sm_line++;
> #if TRAY_DEBUG_MEMORY
>    printf("sm_line=%d\n", sm_line);
> #endif
>    GtkTextBuffer *newbuffer;
546a594,595
>       newbuffer = gtk_text_buffer_new(NULL);
>       
558a608,609
>       g_slist_free(list);
>             
963a1015
>    g_object_unref(G_OBJECT(pixbuf));