几个有待解决的问题??

su1su2

前几天刚刚买了张Linus 9的安装盘,再安装后有以下几个问题
1.刚开始是在WinXP底下安装的,60G的盘我从FAT32格式下的F盘中划出10G来安装Linus,安装一切都OK,也能进入,但要是先进入WinXP,重起再进则哪个系统都进不去了,电脑提示要GRUB. 要是先进Linus,再重起,则两个系统都能进.
2.无奈之下60G全装好Linus后,在图形界面右下脚老是出现一问号:"连接到RHN出错",并且显示一Exception Occured:
Exception type SSL.Error
Exception Handler Information
Traceback (most recent call last):
  File "/usr/bin/../share/rhn/rhn_applet/rhn_applet.py", line 448, in refresh
    self.model.refresh(force)
  File "/usr/bin/../share/rhn/rhn_applet/rhn_applet_model.py", line 264, in refresh
    self.__rpc_server__.refresh(force)
  File "/usr/bin/../share/rhn/rhn_applet/rhn_applet_rpc.py", line 84, in refresh
    status = server.applet.poll_status()
  File "/usr/lib/python2.2/xmlrpclib.py", line 821, in __call__
    return self.__send(self.__name, args)
  File "/usr/lib/python2.2/site-packages/rhn/rpclib.py", line 126, in _request
    verbose=self._verbose
  File "/usr/lib/python2.2/site-packages/rhn/transports.py", line 130, in request
    headers, fd = req.send_http(host, handler)
  File "/usr/lib/python2.2/site-packages/rhn/transports.py", line 614, in send_http
    headers=self.headers)
  File "/usr/lib/python2.2/httplib.py", line 701, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python2.2/httplib.py", line 723, in _send_request
    self.endheaders()
  File "/usr/lib/python2.2/httplib.py", line 695, in endheaders
    self._send_output()
  File "/usr/lib/python2.2/httplib.py", line 581, in _send_output
    self.send(msg)
  File "/usr/lib/python2.2/httplib.py", line 560, in send
    self.sock.sendall(str)
  File "/usr/lib/python2.2/site-packages/rhn/SSL.py", line 191, in write
    sent = self._connection.send(data)
Error: [('SSL routines', 'SSL3_GET_SERVER_CERTIFICATE', 'certificate verify failed')]
就此以上两点,麻烦哪位高手给解答一下!!