Since a few days Domino 9.0.1 FP9 IF2 is available on the Fix Central.
It contains the following fixes:
JPAIAQ5SKW – PANIC: DbMarkCorrupt! (d:\notefile\admin4.nsf Dbiid: 0x3D91E116 0x3C07FE17)
JVEKAQSGCC – Shared, Private on First Use Folder not working as expected in 9.0.1 FP9. It is not possible to view the folder in Designer.
TDOOAREP8W – Performances issue (deadlock) with long held lock after update to Domino 9.0.1 FP9.
YNABANLSUB – Error 4399 (Value Is Out Of Range) When Running Deleteuser Lotusscript.
URL to the official IBM article: http://www-01.ibm.com/support/docview.wss?uid=swg21657963