I am getting an email that says I am Over Quota in my home directory, but I cannot find what is causing it - help.

The most common reason that user are over quota in this way is that the cache files for their browser has grown. Since these files are well hidden in "." directories they are often overlooked by users.

To obtain a list of directories/files sorted by their size you can issue the following
command in your home directory on lectura:

/usr/bin/du -sk ./.??* ./* | sort -n

If you find that your .mozilla area is large then you can empty the cache from within the broswer itself
(e.g. in Mozilla Firefox: Tools / Options / Privacy / Cache - clear )
or from a Unix or Windows prompt go into the .mozilla directory and delete the cache area (most often it has a strange jumble of characters for a directory name).

If you fail to find the cause of the problem then send email to lab rather than simply ignoring the problem--it will not go away on its own!

Note: the .snapshot directory does not count against your quota.