# Current known issues¶

1. $CSCRATCH interactive responsiveness: Sometimes $CSCRATCH appears to hang for a while on commands like ls. This is mostly due to I/O load on the file system. Using /bin/ls instead of ls can help if your ls is aliased to something that requires every files to be inspected, such as ls --color. Limiting the number of files in a single directory to hundreds, rather than thousands, can also help.