If webman made your console sound like a vacuum cleaner then that means your console has over heating issues and probably needs the thermal paste replacing.
The default set temp in webman is 68C. It should not be very loud.
when i first got the ps3 it overheated cuz of some dust on the vents , i cleaned it up and it was better , when i installed HFW it stop making noise, mM shows temps at 63ºC both cpu and gpu, when i installed wM it started going faster. i have my ps on right now and its on for a couple hours now and i dont feel any heat from behind . i did the spoof method on my friends slim ps and it did the same. i have a super slim so i know that the fan isnt as big as other ps3 models. do you think that i should replace the thermal paste ASAP or it can wait? Thanks for the reply.