Murphy's computers laws

I found the following “laws” from Murphy's computers laws.  I selected the best ones which I think are true, funny and interesting.
Read them and have a nice day.

If a program is useless, it will have to be documented 
Bugs will appear in one part of a working program when another 'unrelated' part is modified.
Adding manpower to a late software project makes it later.
A working program is one that has only unobserved bugs.
No matter how many resources you have, it is never enough.
Any cool program always requires more memory than you have.
When you finally buy enough memory, you will not have enough disk space.
Disks are always full. It is futile to try to get more disk space. Data expands to fill any void.
If a program actually fits in memory and has enough disk space, it is guaranteed to crash.If such a program has not crashed yet, it is waiting for a critical moment before it crashes. 
No matter how good of a deal you get on computer components, the price will always drop immediately after the purchase.
The hard drive on your computer will only crash when it contains vital information that has not been backed up.
Whenever you need a crucial file from the server, the network will be down. Whenever you need a crucial file from your hard drive, your computer will crash. 
E-mailed tasking will always come just before you log off. 
The faster you need a hardcopy, the more people will be using the only office printer.
 A patch is a piece of software which replaces old bugs with new bugs. 
The probability of forgetting your password is directly proportional to the frequency of changing it. The longer it takes to download a program the more likely it won't run.
Failure is not an option, it's included with the software.
A program is good when it's bug free - which is impossible.
The only program that runs perfectly every time, is a virus
The troubleshooting guide contains the answer to every problem except yours.
The boss will always come to your workspace when you accidentally open an adult link

The full list can be read from website at