diff -u libnxt.orig/main_jlibnxt.c libnxt/main_jlibnxt.c
--- libnxt.orig/main_jlibnxt.c	2010-01-19 10:43:16.096079000 +0100
+++ libnxt/main_jlibnxt.c	2010-01-19 10:47:03.754465000 +0100
@@ -36,6 +36,13 @@
 #define ETIMEDOUT 116
 #endif
 
+#if defined(__sun)
+/* Enable workaround for broken usb timeout handling on
+ * Solaris. Currently only disables flushing of bulk endpoint on nxt_open
+ * and close.
+ */
+#define LIBUSB_TIMEOUT_BROKEN
+#endif
 
 enum nxt_usb_ids {
     VENDOR_LEGO   = 0x0694,
@@ -169,10 +176,12 @@
 	return 0;
     }
 
+#if !defined(LIBUSB_TIMEOUT_BROKEN)
     // Discard any data that is left in the buffer
     /* TODO: Check error code here, bad things may happen if not timeout */
     while (usb_bulk_read(hdl, 0x82, buf, sizeof(buf), 1) > 0)
 	;
+#endif
 
     return (long)hdl;
 }
@@ -184,9 +193,11 @@
     char buf[64];
     struct usb_dev_handle *hdl = (struct usb_dev_handle *) hhdl;
 
+#if !defined(LIBUSB_TIMEOUT_BROKEN)
     // Discard any data that is left in the buffer
     while (usb_bulk_read(hdl, 0x82, buf, sizeof(buf), 1) > 0)
 	;
+#endif
 
     // Release interface. This is a little iffy we do not know which interface
     // we are actually using. Releasing both seems to work... but...