No application open, running really slow

Question

I have a macbook bought in 2007 with 10.4.11, 2 Ghz, 1 GB 667 Mhz DDR2 SDRAM. It just started being really slow with everything even scrolling down a page (when one could be opened) and when you click on any application, iphoto, itunes, word, mail etc they bounce for a while then nothing, and if you click on them again after that they bounce once and stop. I have checked in disk utility and verified and repaired the drive as well as permissions. I have started it up in single user mode and checked the file structure of the HDD by enetering "/sbin/fsck -f". I have started it with osx disk (holding down 'c') and checked disk utility that way and done first aid and repairs also. NOTHING!!!!!!!! Any help please.

Answer 1

Welcome to Apple Support Communities.
Since you've already verified the relative health of your hard disk, it sounds like you are running extremely short of hard disk space. If you have less than 10% to 15% of your hard disk space free, performance suffers.
You only have 1Gb system RAM, so if you are running more than one program at a time, it fills up available free  RAM quickly. When you scroll down a web page, the system is trying to write RAM contents to hard disk. Disk access is significantly slower than RAM access, so your system runs more slowly. 
'Stuck' programs (often printing apps) can also use lots of CPU cycles and slow system performance. But restarting the system should have 'cured' that.