damaged accessing remote SS2005 database

I access remote MSSQL Server2005 (SS2005) databse over internet
through SQL Server Management Studio (SSMS) in order to fine tune
ASP.NET website using remote SS2005 database.

Today I could not launch my  SSMS
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2616564&SiteID=1

Is it possible that remote server machine or SS2005 damaged my SSMS.
Can it be due to some incompatibilities, virus (I have Norton Antivirus locally) or something else?

I do not have much experience with using SS2005 over internet.
Can you share with me possible practical stories or theory on it?