I have a customer who is still editing on an old XP machine using CS4, and they have asked me to try and speed up the machine because Photoshop and Bridge are extremely slow at loading files or applying filters and effects to images. The core spec is acceptable for a 5-6 year old machine: C2Q Q6700 (which I overclocked to 3GHz) 4GB RAM (3.25GB usable) Geforce 9500GT 1TB Seagate boot disk (new earlier this year) 2TB Seagate backup/storage disk (also new earlier this year) Windows XP 32 bit. I have already done all the usual 30 minute XP cleanup tasks like cleaning the registry, deleting unnecessary junk files, a full system virus and malware scan etc. The system itself is running fine, but Bridge and Photoshop are still extremely slow - so slow you couldn't edit one photo never mind a whole album without wanting to throw the machine through the closest window. I've already advised that an upgrade to Windows 7 before April next year is a good idea, as well as advising the removal of the two abysmal Seagate disks at that time (I benched them... they are pathetic) and replacement with a boot SSD and a faster 3TB mechanical for storage. They have agreed to that and probably an entirely new system which I will be providing and supporting, consigning the old XP system to web and email duties in their home office. What's bugging me is why Bridge and PS are so slow compared with how they used to run on almost exactly the same system. I'm almost convinced that it has something to do with Adobe application settings more than the overall state of the OS which is in the best state it can be, barring a re-install. Are the Adobe application settings or a massive build up of application data causing this?