17.I am experiencing long loading times when opening apps/intermittent lags when switching screens. What is the problem?
The Samsung Galaxy S uses the internal SD to store cache data by default. This storage is significantly slower than the ROM and thus it takes longer for apps to load data from the cache. If your cache isn't too big and your phone is rooted, there is a fix which will place the cache on the NAND. However, storage-space there is very limited and some apps will not correctly install because they need too much cache. Please note that some users are reporting that the lag becomes less in newer f/w versions and that most CustomROMs have the lag fix included but you may have to execute the script yourself by opening the application "MCR Scripts" and executing "LagFix.sh" (or something to that effect).
An alternative fix has been introduced by Mimo using the external SD card. It reportedly delivers better results and is capable of supporting a lot more data (theoretically limited by the 32gb microSDHC size limit)