diff -aruN nspr-4.8.6/mozilla/nsprpub/pr/src/md/unix/unix.c nspr-4.8.6.N/mozilla/nsprpub/pr/src/md/unix/unix.c
--- nspr-4.8.6/mozilla/nsprpub/pr/src/md/unix/unix.c	2010-02-09 19:03:35.000000000 -0800
+++ nspr-4.8.6.N/mozilla/nsprpub/pr/src/md/unix/unix.c	2011-04-15 11:10:27.000000000 -0700
@@ -3026,12 +3026,21 @@
 
 PRIntervalTime _PR_UNIX_GetInterval()
 {
+#if defined(XP_MACOSX)
     struct timeval time;
     PRIntervalTime ticks;
 
     (void)GETTIMEOFDAY(&time);  /* fallicy of course */
     ticks = (PRUint32)time.tv_sec * PR_MSEC_PER_SEC;  /* that's in milliseconds */
     ticks += (PRUint32)time.tv_usec / PR_USEC_PER_MSEC;  /* so's that */
+#else
+    struct timespec time;
+    PRIntervalTime ticks;
+
+    (void)clock_gettime(CLOCK_MONOTONIC, &time);
+    ticks = (PRUint32)time.tv_sec * PR_MSEC_PER_SEC;  /* that's in milliseconds */
+    ticks += (PRUint32)((PRUint64)time.tv_nsec / PR_NSEC_PER_MSEC);  /* so's that */
+#endif
     return ticks;
 }  /* _PR_SUNOS_GetInterval */