WEBSPHERE启动时出现如下错误，望各位仁兄，帮忙指点下如何解决啊？急！在线等
     [8/28/08 9:26:48:307 GMT+08:00]  70a4b2e CacheServiceI I DYNA0048I:WebSphereDynamic Cache initialized successfully.
[8/28/08 9:26:48:400 GMT+08:00]  70a4b2e UserRegistryI A SECJ0136I: Custom Registry:com.ibm.ws.security.registry.unix.UnixRegistryIm
pl has been initialized
[8/28/08 9:26:48:475 GMT+08:00]  70a4b2e UnixRegistryI E SECJ0055E: Authentication failed for root. The user id or password may have
been entered incorrectly or misspelled.  The user id may not exist, the account could have expired or disabled.  The password may h
ave expired.
[8/28/08 9:26:48:495 GMT+08:00]  70a4b2e UnixRegistryI E SECJ0336E: Authentication failed for user root because of the following exc
eption
[8/28/08 9:26:48:689 GMT+08:00]  70a4b2e JaasLoginHelp A SECJ0222E: An unexpected exception occurred when trying to create a LoginCo
ntext. The LoginModule alias is system.SWAM and the exception is .
[8/28/08 9:26:48:743 GMT+08:00]  70a4b2e SASRas        E JSAS0240E: [CredentialsImpl.get_mapped_credentials] Login failed.  Verify t