I hope my advice will help a bit. I recommend you to use notebook with balanced power plan. Pleae change also advanced settings for this plan. In advanced settings you will find Toshiba power saver and cooling method options. Place change it to lower level.
It should reduce fan activity.
For instance when I use my Tecra A11 in office for Office applications and mails I use power saver plan and notebook runs very quiet but performance is still good.
Thanks, but at least not for me. As far as I see the situation the problem is that Toshiba hasn't integrated a real fan control... most notebooks won't have their fans to ran permanently or at least (as in my netbook) this can be disabled. Not so with the Toshi, eh?
Fans performance is controlled by fan table stored in BIOS.
Fan table contains info about the temperature levels and how and when the cooling fan has to start and stop rotating.
I guess this has been improved in BIOS to keep the temperature at lower level. This would protect the parts from damage due to high temperature.
As far as I know you can change this a little bit.
In Toshiba HWSetup in CPU tab you can set the CPU to always low or dynamically… would recommend checking both options…
Furthermore in Win 7 power option you can change the cooling method to more battery friendly state… this should slow down the fan rotation too.