If you have installed SAS 9.1.3 in the past year, you should consider acquiring the hot fixes that have been released in the past few months.
All hot fixes for SAS 9.1.3 (9.1 TS1M3) are contained in Service Pack 2 (SP2), which you may download from the SAS website at http://ftp.sas.com/techsup/download/hotfix/d9_win_sbcs.html#h0
Note that the file size is 555.9M, and depending on your connection speed it may take some time to download.
The fixes and enhancements that were first available in Service Pack 1 are now included in SAS Service Pack 2, so you don't need to update your computer with old files. SAS 9.1.3 hot fixes released prior to SP2 are no longer available for individual download. After SP2 has been applied, you should see the following note in the SAS log window:
NOTE: SAS 9.1.3 Service Pack 2
Further 9.1.3 hot fixes will be available after the release of Service Pack 2, but note that SP2 is required before you can install them. More information about Service Packs and Hot Fixes is available at http://ftp.sas.com/techsup/download/hotfix/faq.html#serv_packs