Do themes slow down firefox? + other questions

[FFactory0x]

Do alternate themes slow down firefox?

What are some exxtensions worth getting and what do they do

 

[fireandicefuel]

I'm pretty sure the ones with 4 stars and up won't due to the fact that they run stable enough.

 

[n7]

Themes shouldn't slow down FF AFAIK

Extensions i use:

All-in-One Gestures (kewl mouse shortcuts)
Adblock (blocks ads)
Flashblock (blocks Flash videos or ads; press play symbol on them to play then if wanted)
IEView (allows viewing page in alternate browser)
Close tab on Double Click (self-explanatory)

 

[Gurck]

Doesn't seem like it to me, I use a theme and the adblock & forecastfox (formerly weatherfox) plugins.

 

[VirtualLarry]

Some themes have more code/functionality behind them, so yes, they can have performance effects, but in generally, if you have a modern PC, unless it is actually triggering a bug somehow, you wouldn't notice the speed difference. I know that having a lot of extensions installed can slightly slow the loading of Firefox.