deadlock on sun.security.jca.ProviderConfig.getProvider

Hi,
I've  been encountered into deadlock when calling to Cipher.getInstance(),
the deadlock is on the sun.security.jca.ProviderConfig.getProvider function.

I search a bit and find it kind similar to Sun bug id:6440846  (Deadlock between AppClassLoader and ExtClassLoader )
the problem it, that they say it is fixed for Java7 beta 55.

I must run my application on java1.5, is there a way to overcome this on java 1.5?

"Logger_Init_thread" daemon prio=6 tid=0x0c614bc0 nid=0xebc waiting for monitor entry [0x0d12f000..0x0d12fcec]
        at sun.security.jca.ProviderConfig.getProvider(Unknown Source)
        - waiting to lock <0x0432e858> (a sun.misc.Launcher$AppClassLoader)
        at sun.security.jca.ProviderList.getProvider(Unknown Source)
        at sun.security.jca.ProviderList$ServiceList.tryGet(Unknown Source)
        at sun.security.jca.ProviderList$ServiceList.access$200(Unknown Source)
        at sun.security.jca.ProviderList$ServiceList$1.hasNext(Unknown Source)
        at javax.crypto.Cipher.getInstance(DashoA12275)
        at com.precise.infra.communication.core.streams.crypt.AESKey.getCipher(AESKey.java:83)

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My code is:
try
{
 IvParameterSpec iv = new IvParameterSpec(ivCopy);
SecretKeySpec secretKey = new SecretKeySpec(keyCopy, "AES");
Cipher cipher = Cipher.getInstance("AES/CFB/NoPadding");
cipher.init(cryptMode, secretKey, iv);
return cipher;
}
catch (Throwable e)