maintenance, clean out your files and do a defragmentation.
Vista works best with 2 GB of RAM.
Here are some tweaks for Vista:
3 days ago, my internet became slower and slower to the point that I can not load some pages unless I refresh at least twice. It might be spyware, adware, trojans or worms but I have already scanned my laptop with AVG, Windows Defenfer, Spybot and Spydoctor. I even tried Ad-aware and Trojan Remover. Can someone help me find a good free program I can get online to fix this, vista compatible?