SunAda Text_Io problem

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I have a problem with Text_Io on the Sun Ada compiler.
The scenario is something like this.
1) Create a file
2) Write 10 lines.
3) Close the file
4) Open the file for read and read 10 lines.
5) Delete the file
6) Create another file (same name).
7) Write >5< lines.
8) Close the file.
9) Open the file for read and read >10< lines!

In other words, somehow the new end of file is not being written or
not be recognized.  Any suggesstions?
Jim Wolfe
wolfj@snoopy.sra.com