test javax/sound/sampled/Clip/bug5070081.java failed (freeze) on 
javatestOS=Windows Vista 6.0 (amd64)
java version "1.6.0_03-ea"
Java(TM) SE Runtime Environment (build 1.6.0_03-ea-b01)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_03-ea-b01, mixed mode)

but passed on previous one 
java version "1.6.0_02"
Java(TM) SE Runtime Environment (build 1.6.0_02-b05)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_02-b05, mixed mode)

Test shows next info when executed on 6u3b1
----------System.out:(7/160)----------
loop 1/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 23041
  Position after stop: 23041
  d(time): 8 ms;d(clip pos): 0 ms.
----------System.err:(0/0)----------
result: Failed. Execution failed: Program `C:/JQA/regression//jdk1.6.0_03\bin\java' interrupted! (timed out?)

I've tested by substitute a very long time factor but test was never finished.
It was interrupted by JTest harness.

At the same when test executed on previous JDK an output is different
-----------------
command: main bug5070081
reason: User specified action: run main bug5070081 
elapsed time (seconds): 27.671
----------System.out:(41/960)----------
loop 1/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 23041
  Position after stop: 23041
  d(time): 10 ms;d(clip pos): 0 ms.
  Position at end: 23041
loop 2/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 23041
  Position after stop: 23041
  d(time): 10 ms;d(clip pos): 0 ms.
  Position at end: 23041
loop 3/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 23553
  Position after stop: 23553
  d(time): 11 ms;d(clip pos): 0 ms.
  Position at end: 23553
loop 4/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 24577
  Position after stop: 24577
  d(time): 14 ms;d(clip pos): 0 ms.
  Position at end: 24577
loop 5/5
  Clip length:
    frames: 66150
    seconds: 3.0
  Position before stop: 24321
  Position after stop: 24321
  d(time): 12 ms;d(clip pos): 0 ms.
  Position at end: 24321
Test passed sucessfully
----------System.err:(1/16)----------
STATUS:Passed.
result: Passed. Execution successful


test result: Passed. Execution successful
-----------------

I've tested it on two machines, and it was reproduced on both 

How to reproduce. get appropriate already compiled bug5070081.class from attached forBug.tar in check-1.6.0_03b01/work/classes/javax/sound/sampled/Clip
and run as 
java -classpath . bug5070081
on appropriate JDK

or just run it in regular way by JTest harness