Well, this is one solution for this particular problem:
1. Rename the Telephon.ini file in the Windows directory to Telephon.old
2. Restart your computer
3. Double-click the Tapiini.exe file in the Window\System folder (nothing appears to happen but this is normal)
4. Check to see that a [new] Telephon.ini file is created in the Windows directory.
5. Check to see if this problem recurs.
Post back & let us know how you got on...