Battery has bloated. Is it "dangerous"?
Yesterday, I came back home and brought my MacBook Pro out of my bag. I noticed something strange: my battery had bloated (while I was walking to go back home, probably).
Can low temperatures (freeze) make batteries bloating? What else can be done this (especially yesterday where I didn't anything so special)?
Then, my uncle examined the battery (he's supposed to know better than me, but I'm not sure). He said I just had to stick* the sides and there would be no further problems. The button (5 lights indicator) is still working perfectly (I haven't put the battery back since I noticed the problem).
Is he right in saying I can continue to use my bloated battery? (I'd prefer "yes", as a new battery isn't cheap). I'm currently afraid of the battery exploding (I have heard it could).
*I'm not sure of the correct word (sorry for my english that lacks words).
MacBook Pro, Mac OS X (10.4.11)