My most common problem with the bug reporting system is distinguishing between bugs and my own stupidity or confusion. So I post to the r-devel list to ask; even when there is a response, I may then fail to get around to submitting the bug report itself ... I know R-core doesn't want the bug list cluttered up with non-bugs, but this two-step process often gets in the way of my filing potential bugs. (I realize this is straying fairly far from the "alpha/beta testing" topic to a more general discussion of bug reporting etc. etc.) The main reason I fail to do alpha/beta checking is that I like to keep using the same version of R as my classes are currently using, and I haven't yet gone to the trouble of maintaining different versions on my system. [did anyone have any thoughts on my 4 Nov query about errors vs warnings in dgamma?] cheers Ben Bolker -- 620B Bartram Hall bolker at zoo.ufl.edu Zoology Department, University of Florida http://www.zoo.ufl.edu/bolker Box 118525 (ph) 352-392-5697 Gainesville, FL 32611-8525 (fax) 352-392-3704