diff -Nru wmint-0.9-orig/wmint/wmint.c wmint-0.9/wmint/wmint.c
--- wmint-0.9-orig/wmint/wmint.c	2008-03-22 22:57:17.771804010 +0200
+++ wmint-0.9/wmint/wmint.c	2008-03-22 23:24:15.174803493 +0200
@@ -34,8 +34,10 @@
 #define MY_EMAIL "slix@gcu-squad.org"
 #define GCU_HOME "http://www.gcu-squad.org/"
 #define WMINT_VERSION "0.9"
+#define SLEEP_USECS 10000
 
 char	*ProgName;
+unsigned int usecs = SLEEP_USECS;
 
 typedef struct {
       unsigned short bit;
@@ -110,6 +112,19 @@
 				    exit(1);
 				  };
 				break;
+			case 's' :
+				if (++i == argc)
+				{ 
+					usage();
+					exit(1);
+				};
+				usecs = (unsigned int) strtol(argv[i], &endp, 10);
+				if (*endp || usecs<0 || usecs>1000000) 
+				  {
+				    usage();
+				    exit(1);
+				  };
+				break;
 			case 'v' :
 				printVersion();
 				exit(0);
@@ -269,7 +284,7 @@
 	                break;
 	        }
         }
-	usleep(10000L);
+	usleep(usecs);
       }
 
 }
@@ -526,7 +541,8 @@
     fprintf(stderr, "\nwmint - Sébastien Liénard <%s>, GCU (%s)\n\n",MY_EMAIL,GCU_HOME);
 	fprintf(stderr, "usage:\n");
 	fprintf(stderr, "\t-d <display name>\n");
-        fprintf(stderr, "\t-i <interrupt number>\n");
+	fprintf(stderr, "\t-i <interrupt number>\n");
+	fprintf(stderr, "\t-s <sleep between refresh (in microseconds), default %u>\n", SLEEP_USECS);
 	fprintf(stderr, "\t-h\tthis help screen\n");
 	fprintf(stderr, "\t-v\tprint the version number\n");
 	fprintf(stderr, "\n");