Can anyone help me withTimeout error in rails 2.0.2

   I have been trying since long to send a mail thorough rails..
Previously when I had rails version 1.2.5 the sending mails worked fine.
But now when i try to send a mail in rails 2.0.2 I always get
timeout error Execution expired.

Though i am able to catch the error I cannot understand why the error is
generated in rails 2.0.2 and not in rails 1.2.5.
Please advice me how can i fix the problem . The following is the error

execution expired(Net::ProtocolError):
        c:/ruby/lib/ruby/1.8/timeout.rb:54:in `rbuf_fill'
        c:/ruby/lib/ruby/1.8/timeout.rb:56:in `timeout'
        c:/ruby/lib/ruby/1.8/timeout.rb:76:in `timeout'
        c:/ruby/lib/ruby/1.8/net/protocol.rb:132:in `rbuf_fill'
        c:/ruby/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
        c:/ruby/lib/ruby/1.8/net/protocol.rb:126:in `readline'
        c:/ruby/lib/ruby/1.8/net/smtp.rb:664:in `recv_response'
        c:/ruby/lib/ruby/1.8/net/smtp.rb:396:in `do_start'
        c:/ruby/lib/ruby/1.8/net/smtp.rb:686:in `critical'
        c:/ruby/lib/ruby/1.8/net/smtp.rb:396:in `do_start'

Thank you.

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