Have you deleted some files from your Mac that were important now you can Undelete Files in Mac OS X. You might have deleted some junk files be moving it to trash and removed from there by emptying the trash. You didn't notice that there was an important file included with it and when you realize, its already too late. But don't worry the file can be restored if you take precaution. The files deleted from trash remains on the Mac drive and only the location information is deleted by the operating system. So If you want Undelete Files in Mac OS X you have to prevent overwriting done by any new file because if it is overwritten you can not recover the file. You can try the time machine backup utility which stores the copy of file at regular interval. There is a possibility that the time machine will fail and the file can not be restored in that case you can use the Mac data recovery software to Restore all the files in the Mac drive. It scans and then provide the preview which on selection Undelete files in Mac OS X. It is quite an easy software so download it now.