Index: rockbox-c240v2/firmware/target/arm/lcd-c200_c200v2.c
===================================================================
--- rockbox-c240v2/firmware/target/arm/lcd-c200_c200v2.c	(revision 27113)
+++ rockbox-c240v2/firmware/target/arm/lcd-c200_c200v2.c	(working copy)
@@ -27,6 +27,7 @@
 #include "system.h"
 #ifdef SANSA_C200V2
 #include "dbop-as3525.h"
+#include "button-target.h"
 #endif
 
 /* Display status */
@@ -129,6 +130,7 @@
 /* send LCD data */
 void lcd_write_data(const fb_data *data, int width)
 {
+    button_prohibit_updates(1);
     do {
         DBOP_DOUT = *data << 8 | *data >> 8;
         data++;
@@ -139,11 +141,13 @@
 
     /* While push fifo is not empty */
     while ((DBOP_STAT & (1<<10)) == 0);
+    button_prohibit_updates(0);
 }
 
 /* send LCD command */
 static void lcd_send_command(unsigned char cmd, unsigned char val)
 {
+    button_prohibit_updates(1);
     DBOP_TIMPOL_23 = 0xa167006e;
 
     DBOP_DOUT = cmd | val << 8;
@@ -151,6 +155,7 @@
     while ((DBOP_STAT & (1<<10)) == 0);
 
     DBOP_TIMPOL_23 = 0xa167e06f;
+    button_prohibit_updates(0);
 }
 
 static inline void as3525_dbop_init(void)
Index: rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-target.h
===================================================================
--- rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-target.h	(revision 27113)
+++ rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-target.h	(working copy)
@@ -30,6 +30,7 @@
 bool button_hold(void);
 void button_init_device(void);
 int button_read_device(void);
+void button_prohibit_updates(int prohibit);
 
 /* Sandisk Sansa c200 button codes */
 
Index: rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-c200v2.c
===================================================================
--- rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-c200v2.c	(revision 27113)
+++ rockbox-c240v2/firmware/target/arm/as3525/sansa-c200v2/button-c200v2.c	(working copy)
@@ -27,6 +27,9 @@
 #include "dbop-as3525.h"
 
 static unsigned short _dbop_din;
+static unsigned int   button_state    = BUTTON_NONE;
+static unsigned int   button_prohibit = 0;
+static unsigned int   button_last_update;
 
 static bool hold_button     = false;
 #ifndef BOOTLOADER
@@ -43,10 +46,7 @@
     return hold_button;
 }
 
-/*
- * Get button pressed from hardware
- */
-int button_read_device(void)
+static void button_update_state(void)
 {
     int btn = BUTTON_NONE;
 
@@ -63,7 +63,8 @@
     }
 #endif /* BOOTLOADER */
     if (hold_button) {
-        return 0;
+        button_state = 0;
+        return;
     }
 
     /* direct GPIO connections */
@@ -88,5 +89,32 @@
     if(!(_dbop_din & (1<<15)))
         btn |= BUTTON_REC;
 
-    return btn;
+    button_last_update = current_tick;
+    button_state = btn;
 }
+
+void button_prohibit_updates(int prohibit)
+{
+    if (prohibit)
+        button_prohibit++;
+    else
+        button_prohibit--;
+
+    if (prohibit != 0)
+        return;
+
+    if (button_last_update != current_tick)
+        button_update_state();
+}
+
+
+/*
+ * Get button pressed from hardware
+ */
+int button_read_device(void)
+{
+    if (!button_prohibit)
+        button_update_state();
+
+    return button_state;
+}