Java APIs

A site I use has a pop up applelet window which works fine in IE 6 However I recently downloaded the IE 7 Beta version and, when using that, get a runtime library error and a fata errror in iexplore.exe, closing all windows if the error message window is closed. The Java log report is:


# An unexpected error has been detected by HotSpot Virtual Machine:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7c93426d, pid=260, tid=2936
#
# Java VM: Java HotSpot(TM) Client VM (1.5.0_06-b05 mixed mode)
# Problematic frame:
# C [ntdll.dll+0x3426d]
#

--------------- T H R E A D ---------------

Current thread (0x0c33a450): JavaThread "Thread-5" [_thread_in_native, id=2936]

siginfo: ExceptionCode=0xc0000005, reading address 0x00000010

Registers:
EAX=0x00000010, EBX=0x0000019c, ECX=0x00270ea8, EDX=0x00000005
ESP=0x0c6df06c, EBP=0x0c6df28c, ESI=0x002701a0, EDI=0x002701c0
EIP=0x7c93426d, EFLAGS=0x00010246

Top of Stack: (sp=0x0c6df06c)
0x0c6df06c: 0c33ab29 00000011 07caa0c4 6d6f408b
0x0c6df07c: 0c34dd48 00000000 0c6df0b8 00270000
0x0c6df08c: 7c910732 00000005 00270778 00270000
0x0c6df09c: 0c3e5bb0 0c6df090 00000004 0c6df2d4
0x0c6df0ac: 7c90ee18 7c910738 ffffffff 7c910732
0x0c6df0bc: 0c6df0f0 00270000 7c910732 00270188
0x0c6df0cc: 00270778 00270000 0c3dcef0 0c6df0c8
0x0c6df0dc: 00000015 0c6df30c 7c90ee18 7c910738

Instructions: (pc=0x7c93426d)
0x7c93425d: 11 89 95 64 ff ff ff 8b 40 0c 89 85 5c ff ff ff
0x7c93426d: 8b 00 3b 42 04 0f 85 13 01 00 00 3b c1 0f 85 0b


Stack: [0x0c6a0000,0x0c6e0000), sp=0x0c6df06c, free space=252k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [ntdll.dll+0x3426d]
C [msvcrt.dll+0x1c3c9]
C [msvcrt.dll+0x1c3e7]
C [msvcrt.dll+0x1c42e]
C [verify.dll+0x17d0]
C [verify.dll+0x16b6]
C [verify.dll+0x1efc]
C [verify.dll+0x1a91]
C [verify.dll+0x126b]
C [java.dll+0x3fb7]
V [jvm.dll+0x116063]
V [jvm.dll+0x75e79]
V [jvm.dll+0x76182]
V [jvm.dll+0x75e58]
V [jvm.dll+0xc4baa]
V [jvm.dll+0xc5847]
V [jvm.dll+0xc572d]
V [jvm.dll+0x7fc8d]

then loads including the site name etc
j--------------- S Y S T E M ---------------

OS: Windows XP Build 2600 Service Pack 2

CPU:total 2 family 15, cmov, cx8, fxsr, mmx, sse, sse2, ht

Memory: 4k page, physical 523756k(106688k free), swap 1278208k(831804k free)

vm_info: Java HotSpot(TM) Client VM (1.5.0_06-b05) for windows-x86, built on Nov 10 2005 11:12:14 by "java_re" with MS VC++ 6.0

Any ideas? Or is this a compatability problem that needs sorting and if so by Sun or MS?