diff --git a/configs/README.txt b/configs/README.txt
index 6df7359701..fc8373df9c 100644
--- a/configs/README.txt
+++ b/configs/README.txt
@@ -953,9 +953,9 @@ defconfig -- This is a configuration file similar to the Linux
 		CONFIG_FTPD_SERVERID - The server name to use in FTP communications.
 		  Default: "NuttX FTP Server"
 		CONFIG_FTPD_CMDBUFFERSIZE - The maximum size of one command.  Default:
-		  512 bytes.
+		  128 bytes.
 		CONFIG_FTPD_DATABUFFERSIZE - The size of the I/O buffer for data
-		  transfers.  Default: 2048 bytes.
+		  transfers.  Default: 512 bytes.
 		CONFIG_FTPD_WORKERSTACKSIZE - The stacksize to allocate for each
 		  FTP daemon worker thread.  Default:  2048 bytes.
 
diff --git a/configs/stm3240g-eval/README.txt b/configs/stm3240g-eval/README.txt
index e4902947e2..3c4f7e77c4 100755
--- a/configs/stm3240g-eval/README.txt
+++ b/configs/stm3240g-eval/README.txt
@@ -737,6 +737,28 @@ Where <subdir> is one of the following:
        Then DMA works fine. The downside is, of course, is that we lose 64Kb
        of precious SRAM.
 
+    5. Another SDIO/DMA issue.  This one is probably a software bug.  This is
+       the bug as stated in the TODO list:
+
+       "If you use a large I/O buffer to access the file system, then the
+        MMCSD driver will perform multiple block SD transfers.  With DMA
+        ON, this seems to result in CRC errors detected by the hardware
+        during the transfer.  Workaround:  Use I/O buffers less the 1024
+        bytes."
+
+       For this reason, CONFIG_FTPD_DATABUFFERSIZE=512 appears in the defconfig
+       file.
+
+    6. Another DMA-related concern.  I see this statement in the reference
+       manual:  "The burst configuration has to be selected in order to respect
+       the AHB protocol, where bursts must not cross the 1 KB address boundary
+       because the minimum address space that can be allocated to a single slave
+       is 1 KB. This means that the 1 KB address boundary should not be crossed
+       by a burst block transfer, otherwise an AHB error would be generated,
+       that is not reported by the DMA registers."
+
+       There is nothing in the DMA driver to prevent this now.
+
   ostest:
   ------
     This configuration directory, performs a simple OS test using
diff --git a/configs/stm3240g-eval/nsh/defconfig b/configs/stm3240g-eval/nsh/defconfig
index 76800c6712..bb4b252221 100644
--- a/configs/stm3240g-eval/nsh/defconfig
+++ b/configs/stm3240g-eval/nsh/defconfig
@@ -864,9 +864,9 @@ CONFIG_NET_RESOLV_ENTRIES=4
 # CONFIG_FTPD_SERVERID - The server name to use in FTP communications.
 #   Default: "NuttX FTP Server"
 # CONFIG_FTPD_CMDBUFFERSIZE - The maximum size of one command.  Default:
-#   512 bytes.
+#   128 bytes.
 # CONFIG_FTPD_DATABUFFERSIZE - The size of the I/O buffer for data
-#   transfers.  Default: 2048 bytes.
+#   transfers.  Default: 512 bytes.
 # CONFIG_FTPD_WORKERSTACKSIZE - The stacksize to allocate for each
 #   FTP daemon worker thread.  Default:  2048 bytes.
 # 
@@ -876,6 +876,7 @@ CONFIG_NET_RESOLV_ENTRIES=4
 # CONFIG_DISABLE_PTHREAD - pthread support is required
 # CONFIG_DISABLE_POLL - poll() support is required
 #
+CONFIG_FTPD_CMDBUFFERSIZE=512
 
 #
 # RTC Configuration
diff --git a/configs/stm3240g-eval/nsh2/defconfig b/configs/stm3240g-eval/nsh2/defconfig
index 25ab466b88..1160cc96df 100644
--- a/configs/stm3240g-eval/nsh2/defconfig
+++ b/configs/stm3240g-eval/nsh2/defconfig
@@ -865,9 +865,9 @@ CONFIG_NET_RESOLV_ENTRIES=4
 # CONFIG_FTPD_SERVERID - The server name to use in FTP communications.
 #   Default: "NuttX FTP Server"
 # CONFIG_FTPD_CMDBUFFERSIZE - The maximum size of one command.  Default:
-#   512 bytes.
+#   128 bytes.
 # CONFIG_FTPD_DATABUFFERSIZE - The size of the I/O buffer for data
-#   transfers.  Default: 2048 bytes.
+#   transfers.  Default: 512 bytes.
 # CONFIG_FTPD_WORKERSTACKSIZE - The stacksize to allocate for each
 #   FTP daemon worker thread.  Default:  2048 bytes.
 # 
@@ -877,6 +877,7 @@ CONFIG_NET_RESOLV_ENTRIES=4
 # CONFIG_DISABLE_PTHREAD - pthread support is required
 # CONFIG_DISABLE_POLL - poll() support is required
 #
+CONFIG_FTPD_CMDBUFFERSIZE=512
 
 #
 # RTC Configuration