Host C Drive Space disappearing

[VirtualBoxLover]

I installed windows 7 on virtual Box everything is working well except when I do stuff on Windows 7 (guest) my host's (which is a Windows XP Professional) C drive free space is disappearing so if I were to open Internet Explorer on my Windows 7 (guest) it would take up like 200 mb off my Host C: drive. Does anyone know why this is happening. Is there a fix to this problem.

Thanks.

[noteirak]

Do you expect your Windows 7 to not grow in size when you use it? 200MB would be the IE cache growing.
The exactly same behaviour would appear on your host too...

[VirtualBoxLover]

So what ever I do on my Guest the same impact would happen in my host too.

[VirtualBoxLover]

The Guest also has 20 GB Free so should windows 7 grow in Virtual Hard Drive and not my host?

[noteirak]

your guest hard drive is actually a file, which is located on your host hard drive. So if your guest grows, so does the file, and so does the used space on your host.

[VirtualBoxLover]

Ok thank you very much for your help.