delting files too slow and cpu usage 100%

i used nightly 72057 installed in virtual box
host operating system window7 home premium 64 bit

i made a vdi disk of 2 gb which for the testing purpose is placed on a ramdrive.

while installing a program to reactos is fast
when i come to delete files and folders the system becomes a snail
cpu usage goes to 100% and the delete time is pretty pretty long

so the file system is not supported correct yet???
the copy delete subroutine is not working properly???