Spark Issues

I am having problems. When I try logging in I get Incorrect Username/Passoword. But when I login into someone else’'s machine I can get in. We take the default settings so the SSL option is not taken. Instead using the sever name I put in the IP address. The first date I started to have this problem was 8/14/06. I found the first failed attempt in the error log and this is what it states:

006.08.14 17:25:10 [

] Connection closed before session established

Socket[addr=/(my IP address),port=1195,localport=5222]

Can you please help?