Is it worth it to upgrade?
I have a Macbook that I got back in 2009, and I've been noticing some compatibility issues. The online college courses I'm taking require certain versions of web browsers and Java, and when I go to download them I can't because it says they are not compatible with my current operating system. My computer is not really in the best shape either (has been dropped a few times and the disk drive was broken but i think i fixed it) it makes strange noises when starting up sometimes, and the plastic is cracking around the edges -_- I recently bought an external hard drive to back everything up just in case my computer decides to take a dump. Does time machine back up the new operating system software if i decide to get it? I just don't want to buy it, then be out the 20 bucks. Also, are there pros and cons to the new software? Any helpful information would be greatly appreciated, thanks!
MacBook, Mac OS X (10.5.8)