diff --git a/doc/sane.tex b/doc/sane.tex
index e60bccd23..86284583c 100644
--- a/doc/sane.tex
+++ b/doc/sane.tex
@@ -14,7 +14,7 @@
 
 \title{\huge SANE Standard Version 1.01}
 \author{}
-\date{\today} 
+\date{July 31, 2000} 
 
 \makeindex
 
diff --git a/frontend/xscanimage.c b/frontend/xscanimage.c
index 56f9fde34..933467beb 100644
--- a/frontend/xscanimage.c
+++ b/frontend/xscanimage.c
@@ -119,7 +119,7 @@ static struct option long_options[] =
   {
     {"help", no_argument, NULL, 'h'},
     {"version", no_argument, NULL, 'V'},
-    {0, }
+    {0, 0, 0, 0 }
   };
 
 
@@ -367,24 +367,24 @@ update_param (GSGDialog *dialog, void *arg)
   if (sane_get_parameters (gsg_dialog_get_device (dialog), &params)
       == SANE_STATUS_GOOD)
     {
-      u_long size = 10 * params.bytes_per_line * params.lines;
+      double size = params.bytes_per_line * params.lines;
       const char *unit = "B";
 
       if (params.format >= SANE_FRAME_RED && params.format <= SANE_FRAME_BLUE)
 	size *= 3;
 
-      if (size >= 10 * 1024 * 1024)
+      if (size >= 1024 * 1024)
 	{
 	  size /= 1024 * 1024;
 	  unit = "MB";
 	}
-      else if (size >= 10 * 1024)
+      else if (size >= 1024)
 	{
 	  size /= 1024;
 	  unit = "KB";
 	}
-      sprintf (buf, "%dx%d: %lu.%01lu %s", params.pixels_per_line,
-	       params.lines, size / 10, size % 10, unit);
+      sprintf (buf, "%dx%d: %1.1f %s", params.pixels_per_line,
+	       params.lines, size, unit);
     }
   else
     sprintf (buf, "Invalid parameters.");
@@ -555,7 +555,7 @@ input_available (gpointer data, gint source, GdkInputCondition cond)
 
   while (1)
     {
-      status = sane_read (dev, buf, sizeof (buf), &len);
+      status = sane_read (dev, (unsigned char *) buf, sizeof (buf), &len);
       if (status != SANE_STATUS_GOOD)
 	{
 	  if (status == SANE_STATUS_EOF)
diff --git a/sanei/sanei_ab306.c b/sanei/sanei_ab306.c
index 21e7b78c0..ccbc39c5e 100644
--- a/sanei/sanei_ab306.c
+++ b/sanei/sanei_ab306.c
@@ -138,7 +138,7 @@ ab306_outb (Port *p, u_long addr, u_char val)
 
   if (p->port_fd >= 0)
     {
-      if (lseek (p->port_fd, addr, SEEK_SET) != addr)
+      if ((u_long) lseek (p->port_fd, addr, SEEK_SET) != addr)
 	return;
       if (write (p->port_fd, &val, 1) != 1)
 	return;
@@ -154,7 +154,7 @@ ab306_inb (Port *p, u_long addr)
 
   if (p->port_fd >= 0)
     {
-      if (lseek (p->port_fd, addr, SEEK_SET) != addr)
+      if ((u_long) lseek (p->port_fd, addr, SEEK_SET) != addr)
 	return -1;
       if (read (p->port_fd, &ch, 1) != 1)
 	return -1;
@@ -196,7 +196,8 @@ static SANE_Status
 ab306_write (Port *p, const void *buf, size_t len)
 {
   u_long base = p->base;
-  int i, cksum = 0;
+  u_int i;
+  int cksum = 0;
 
   DBG(3, "ab306_write: waiting for scanner to be ready %02x\n",
       ab306_inb (p, base + 1));
@@ -397,7 +398,7 @@ sanei_ab306_cmd (int fd, const void *src, size_t src_size,
 
   if (dst && *dst_size > 0)
     {
-      int i, cksum = 0;
+      u_int i, cksum = 0;
 
       DBG(3, "sanei_ab306_cmd: waiting for scanner to be NOT ready %02x\n",
 	  ab306_inb (p, p->base + 1));
@@ -447,13 +448,13 @@ sanei_ab306_rdata (int fd, int planes, SANE_Byte * buf, int lines, int bpl)
 	  do
 	    nstat = ab306_inb (p, p->base + 1);
 	  while (((p->lstat ^ nstat) & 0x10) == 0);
-
+	  
 	  if (p->port_fd >= 0)
 	    {
 	      /* the pixel-loop: */
 	      for (bcnt = 0; bcnt < xmax; bcnt++)
 		{
-		  if (lseek (p->port_fd, p->base, SEEK_SET) != p->base)
+		  if ((u_long) lseek (p->port_fd, p->base, SEEK_SET) != p->base)
 		    return SANE_STATUS_IO_ERROR;
 		  if (read (p->port_fd, buf, 1) != 1)
 		    return SANE_STATUS_IO_ERROR;