diff --git a/acatcher/acatcher.cxx.template b/acatcher/acatcher.cxx.template
index 35268b5..3c4cb50 100644
--- a/acatcher/acatcher.cxx.template
+++ b/acatcher/acatcher.cxx.template
@@ -52,7 +52,7 @@ void cls()
 
 int baseport = 4000;
 
-const int BUFLEN = 1024*1024;  // in bytes
+const int BUFLEN = 10240*1024;  // in bytes
 //const int ABUFLEN = 1024; // in words
 
 // Yes this is ugly.  :P
@@ -175,6 +175,7 @@ struct image_sockin : public sockin {
 	virtual void handle(unsigned char *data, int len, int listener) {
 		int begin = -1, end = -1;
 
+		if (len <= 0) return;
 		if ((len + bufsize) > IBUFLEN) {
 			bufsize = 0;
 		}