System hard drive filling up with backups
I recently discovered that my mba (mid 2011, OS X 10.7.5) is filling up with something called "backups" and I don't understand where these files are coming from or where I can find them to delete them.
I have configured Time Machine to make backups whenever I connect my external harddrive I keep my backups on but now I am suspecting Time Machine of making local copies on my system drive as well. How do I stop this and how do I delete the files it has created
-> about this mac -> more info -> storage
I really apreciate it if someone can help me quickly with this as I am in a bit of a hurry as I'm going travelling for the next month and I really need all the disk space I can to keep my photographs on. Thanks in advance!
MacBook Air, Mac OS X (10.7.5), i7, 256 GB