java.io.IOException after execution jar command in build 37 and .java_pidxxxx files left behind

uname -a
SunOS sr1-usca-06 5.9 Generic_117171-17 sun4u sparc SUNW,Sun-Fire-880

Steps to reproduce:

Create any dir (let say test), inside this test dir create another dir (let say classes, copy in classes dir couple class files.
Go to classes dir and execute:

/net/koori.sfbay/onestop/jdk/1.6.0/promoted/all/b36/binaries/solaris-sparc/bin/jar -cf ../my_jar .

you will get my_jar.jar in test dir

do same with t?e build 37:

/net/koori.sfbay/onestop/jdk/1.6.0/promoted/all/b37/binaries/solaris-sparc/bin/jar -cf ../my_jar .
(if you will not see it from the first attempt, try couple more times)

And this is what I got :
% /net/koori.sfbay/onestop/jdk/1.6.0/promoted/all/b37/binaries/solaris-sparc/bin/jar -cf ../my_jar .
java.io.IOException: Operation not applicable
at java.io.FileInputStream.readBytes(Native Method)
at java.io.FileInputStream.read(FileInputStream.java:199)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:256)
at java.io.BufferedInputStream.read(BufferedInputStream.java:313)
at sun.tools.jar.Main.addFile(Main.java:613)
at sun.tools.jar.Main.create(Main.java:412)
at sun.tools.jar.Main.run(Main.java:142)
at sun.tools.jar.Main.main(Main.java:903)

Also some temporary .java_pidxxxx left behind.
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