Quicktime launcher taking up a lot of space on hard drive

I used Disk Inventory X, an application that shows what uses up your hard disk space, and I found this:

What I can't understand is why QuickTime Player Launcher takes up so much space.

I will give you some background about why I was checking the disk space.

I installed Parallels Desktop 7 on my MacBook Air. When I was installing it, I chose the recommended settings. It said that the application would take up 60GB of hard drive space. That was too much for me as I wanted to assign only 25GB to Parallels but it was too late to do anything about it then and there. I checked the Disk Utility and indeed 60GB of space had been gobbled up after I installed Parallels.

A few days later, I contacted Parallels Technical Support to ask them if there was a way to reduce the amount of disk space Parallels was taking. They said there was. They told me the steps to reduce it. I followed the steps and found that instead of freeing up disk space, it had actually used up even MORE space. I contacted Tech Support who then said they would reduce the space for me. The person took over control of my mouse and screen and I could see what he was doing. The support person followed all the same steps I took, and afterwards, the available disk space was reduced even MORE. He reduced the space Parallels was supposed to take up from 60 GB to 25 GB. (There was only about 12GB used up by files and applications in Parallels.) So instead of freeing up 35 GB, it gobbled up even more.

I pointed this out to him which he could not dispute and then he decided to delete my own files to free up disk space. I caught him only just in time as I had not been watching the screen for a few moments when he started doing this. I ordered him to stop and he took the personal files out of Trash. I complained loudly to him asking him why he did that. He said he was removing duplicated applications by going through Documents and Desktop to make more space for me on my hard drive. I told him that was not what I had asked support for, for someone to clean up my hard drive. I could do that myself. I had asked them to shrink down Parallels to create more available space on my hard drive.

Frankly, I was appalled that technical support would do something like that to a customer - play around with their personal files, even putting things THEY thought were not needed into Trash (mind you, I am not talking about Parallels files he was deleting. He did that first and then moved onto my own personal files like some browser dmgs and other stuff like that that had nothing to do with Parallels). By the way, the applications he moved into trash were not duplicates. He just thought they were.

He said he would put me onto a second-level engineer to help me because he didn't know what to do.

I went through it with the second-level engineer, and he told me that even if he shrinks down Parallels from 60GB to 25GB, I would only save 11GB if space (the size of the .pvm file).

I told him that from memory when I installed the Parallels software I had checked DU before and after the installation and was pretty certain the disk space had gone down by 60GB, exactly what the Parallels installation message told me it would. Then he proceeded to tell me that DU was actually inaccurate. Even though available DU space was only 50GB, that as a matter of fact, it could be 70GB space available. I didn't trust his explanation.

I asked him to remove all Parallels from my computer because I did not trust the software any more and he did so. I only saved 11GB of free space after he did this.

Anyway, I checked the Disk Inventory space before and after he removed Parallels and found the Quicktime Launcher to be taking up the most space. I don't use Quicktime much; I use VLC for watching videos.

I wondered if it was more than a coincidence that Quicktime Launcher was taking up roughly 65GB and that the Parallels took up 60-65GB after I installed it.

I don't have that many movies on my hard drive anyway. I find it hard to believe that an application could take up all this space.

I think Parallels ruined my computer. It gobbled up at least 60GB of space that I never got back except for maybe 11GB after I deleted it.

The second-level engineer could not help me in the end. He just kept saying that even though Parallels application says that it will take up 60GB of hard disk space that it only actually takes up the space that your files occupy (in my case 12GB). I am pretty sure the application took up 60GB after installation because I checked Disk Utility before and after installing it.

So I've come here to see whether anyone can shed light on any of this.