SQL Server does not exist or access denied - periodic error

Hi There,
For the last week or so, I have been getting periodic errors on my sites powered by MSSQL databases. The error message is as follows:
Microsoft OLE DB Provider for SQL Server error '80004005'
[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied.
Usually, a quick refresh, and everything works fine again.
My host doesn't know what has caused the issue, but has dug up this microsoft link: http://support.microsoft.com/kb/907264
Most of that tech speak is beyond me! I use Dreamweaver - does anybody know if the standard dreamweaver connections or cursors contravene the advice on that page, and if so how to fix it?
If not, does anybody know where to look to solve this issue?
Thanks,
Dan 

I had this same problem and on a hunch I deleted the brackets
so that the connection string instead of being,
"Persist Security Info=False;Data
Source=[THESERVER\SQLEXPRESS];Initial Catalog=[AdventureWorks];User
ID=[ATEST];Password=[kjdkjdkjd]"
is now,
"Persist Security Info=False;Data
Source=THESERVER\SQLEXPRESS;Initial Catalog=AdventureWorks;User
ID=ATEST;Password=kjdkjdkjd"
This was in Dreamweaver 8.

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