A problem relative ibdata1

[Riccardo Michele Filippone]

Hello! First of all sorry for my terrible english.

Well I've a big problem with ibdata1, this damn file increase its size  
constantly.

I tryed to use innodb_file_per_table... but:

- MySQL create a lot of ibd files for all DB (correct)
- ibdata1 is however created and increase its size...

how can I prevent the creation of this file (ibdata1)?

Thanks for your future suggestion.