Did you check SQL Server log and Windows event logs for problems with SQL Server?

>Hi, i have a database with 1.8gb storage ,i have 4 user working together at the same time, inserting, updating and printing data, when their are woring the database disconect, and to work again i have to restar de sql services....
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>1. i use vp9 sp2
>2. sql standard edition 2005
>3. windows server2003 sp1 (standar edition) (2.8 ghz, 2gb ram)
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>???