inserting data with tquery stops after 100 records

my application reads a big text file (not comma delimited), parses it,
and writes the records out to sql 6.5 using a tquery component.
however, after about a hundred insertions, it stops, with the cursor
looking like "sql" hour glass.  can anyone tell me what's happening?

I have one database component, three tqueries (to handle each insertion
into three different tables), 3 datasets/ttables and 3 dbgrids so i can
whatch what's going on.

Thanks for the help.

Mark Williamson