Backup Restore just stuck

[Remy Blaettler]

I have normal with mysqldumb created backup file. It's about 15GB and contains a lot of blobs. Max size per blob is 30MB.

Now when I try to restore the backup, the process just gets stuck.
mysql -uuser -ppassword dev_supertext < supertext.sql

It get stuck while writing back the biggest table with the blobs. There is no error message and mysql is still running fine.

This is on a 64bit 5.1.48 community edition for Windows server.

max_allowed_packet is set to 40MB and is not the problem. I had that before.

Any other settings I could check or something I can monitor during the restore?
Didn't see anything special in the query or error log.