SQL Profiler - Scripting a trace with HostName filter
When the script is generated in Profiler 2005, the default value saved for the logical  operator is 1='OR', so the trace will capture more information than we initially intended.

exec sp_trace_setfilter @TraceID, 8, 1, 0, N'HOSTNAME1'    -- OR 
exec sp_trace_setfilter @TraceID, 8, 1, 0, N'HOSTNAME2'
exec sp_trace_setfilter @TraceID, 8, 1, 0, N'HOSTNAME3'
set @bigintfilter = 10 -- reads &gt;= 10
exec sp_trace_setfilter @TraceID, 16, 0, 4, @bigintfilter  -- AND
exec sp_trace_setfilter @TraceID, 35, 1, 6, N'DB'          -- OR


In Profiler >=2008, the script has 0(AND) for the first occurrence of the column being filtered.

exec sp_trace_setfilter @TraceID, 8, 0, 0, N'HOSTNAME1'    -- AND               
exec sp_trace_setfilter @TraceID, 8, 1, 0, N'HOSTNAME2'  
exec sp_trace_setfilter @TraceID, 8, 1, 0, N'HOSTNAME3' 
exec sp_trace_setfilter @TraceID, 35,0, 6, N'DB'           -- AND                
set @bigintfilter = 10 -- reads
exec sp_trace_setfilter @TraceID, 16, 0, 4, @bigintfilter  -- AND


This looks like a bug in Profiler 2005.