Firefox freezes when using Audiogon

Almarg, djohnson54,
ok, you guys have me a bit worried now that i got duped by that FF security patch to install.... ;(
As Almarg suggested, I did look carefully at all the programs installed on my machine & nothing seems out-of-order i.e. i can explain each installed program. 
I will run Malwarebytes tonight. I have it installed & have been a user of the free version for several years now. i also have Bitdefender. I've been running them in normal operational mode (not safe mode). I will now run it in safe mode....
thanks once again guys.... 

@bombaywalla you're not alone.  I've cleaned up lots of machine for friends and colleagues.  The worst one I've seen to date had over 9,400 suspicious items according to Malwarebytes.  This was also a situation where a grandchild was playing numerous "free" games.  That one took a while to clean up!  Dick

just letting the experts know that i ran malwarebytes in 'safe mode with networking' *& it did not find threats. i was happy to see this & this might be a good sign...
this uBlock is working really well - all those banner ads on the top of the Audiogon page have all disappeared :-)

@bombaywalla Good news indeed but I assume that it doesn't solve your initial problem with Firefox.  If anything else occurs to me, I'll let you know.

thanks djohnson54.
haven't had a chance to stream since Monday but hope to do so today & over the weekend. *if* i still see FF freeze during streaming then i'll know that i still have the issue....