b4723783 times out intermittently

Here is a tracking entry from my nightly analysis report:

nsk.hprof
    nsk/hprof/regression/b4723783
        2009.03.09 Solaris SPARC Server VM -Xmixed (machine vm-t1000-01a)
        2009.03.09 Solaris SPARC-64 Server VM -Xcomp (machine meena)
        2009.03.09 Solaris SPARC-64 Server VM -Xmixed (machine vm-v100-01)
        2009.03.09 Win32 Server VM -Xmixed (machine vm-v20z-19)
        2009.03.04 Win32 Server VM -Xcomp (machine vm-v20z-19)
        2009.03.04 Win32 Server VM -Xmixed (machine vm-em64t-01)
        2009.03.03 Solaris SPARC Client VM -Xcomp (machine kiang)
        2009.03.03 Solaris SPARC-64 Server VM -Xcomp (machine denab)
        2009.03.03 Solaris X86 Client VM -Xcomp (machine tatooinevm)
        2009.03.03 Win32 Client VM -Xcomp (machine vm-em64t-01)
        2009.03.03 Win32 Client VM -Xmixed (machine vm-v20z-20)
        2009.03.02 Solaris SPARC Server VM -Xcomp (machine vm-t1000-02b)
        2009.03.02 Solaris SPARC-64 Server VM -Xcomp (machine jtg-s129)
        2009.03.02 Win32 Server VM -Xcomp (machine vm-v20z-20)
        2009.02.26 Solaris SPARC Server VM -Xcomp (machine naboovm)
        2009.02.26 Solaris SPARC-64 Server VM -Xcomp (machine vm-t1000-01a)
        2009.02.26 Solaris SPARC-64 Server VM -Xmixed (machine carrot)
        2009.02.26 Win32 Client VM -Xmixed (machine vm-x86-3)
        2009.02.23 Solaris SPARC-64 Server VM -Xcomp (machine vm-b1600s-2)
        2009.02.23 Win32 Server VM -Xcomp (machine vm-em64t-01)
        2009.02.20 Solaris SPARC-64 Server VM -Xcomp (machine sb150-002)
        2009.02.20 Win-AMD64 Server VM -Xmixed (machine vm-amd64-04)
        2009.02.09 Solaris SPARC Server VM -Xcomp (machine hiltonlv)
        2009.01.30 Solaris SPARC Server VM -Xcomp (machine jtgb4u2e)
        2009.01.30 Solaris SPARC-64 Server VM -Xcomp (machine jtg-s129)
        2009.01.30 Win32 Server VM -Xmixed (machine vm-em64t-01)
        2009.01.26 Linux IA32 Server VM -Xmixed (machine jtg-i118)
        2009.01.26 Solaris SPARC-64 Server VM -Xcomp (machine vm-t1000-02b)
        2009.01.26 Solaris SPARC-64 Server VM -Xmixed (machine hiltonlv)
        2009.01.26 Win32 Server VM -Xmixed (machine colfax005)
        2009.01.08 Solaris SPARC Client VM -Xcomp (machine vm-t1000-04)
        2009.01.08 Solaris SPARC Client VM -Xmixed (machine barkesh)
        2009.01.08 Solaris SPARC-64 Server VM -Xcomp (machine vm-b1600s-4)
        2009.01.08 Win32 Client VM -Xcomp (machine vm-em64t-01)
        2009.01.08 Win32 Client VM -Xmixed (machine vm-v20z-20)
        2009.01.06 Solaris SPARC-64 Server VM -Xcomp (machine vm-t1000-02a)
        2008.10.25 Solaris SPARC Server VM (machine denab)
        2008.10.23 Solaris SPARC Client VM (machine vm-t1000-02a)
        2008.10.23 Solaris SPARC Server VM (machine jtg-s111)
        2008.10.16 Win32 Server VM (machine vm-v20z-20)
        2008.09.18 Linux IA32 Server VM (machine peas)
        2008.09.18 Solaris SPARC-53 Server VM (machine vm-t1000-01b)
        2008.09.17 Solaris SPARC Client VM (machine jtg-s130)
        2008.09.16 Solaris SPARC-64 Server VM (machine barkesh)
        2008.09.15 Solaris SPARC Server VM (machine kiang)
        2008.09.15 Win32 Server VM (machine vm-v20z-19)


A good number of the test machines are old and slow, but there are
some pretty decent machines on the above list also.