large filesystem failing

[John Jolet]

i have a huge filesystem (64Gig) that amanda is refusing to back up.  it's only 23% 
full, but when i try to back it up, i get [no estimate] on the failure message.  i 
tried increasing the etimeout to 3000, but no luck (and it's for SURE not waiting an 
hour!).  The sendsize.debug file has an estimate in it for that filesystem.  Am i 
hitting a limit on the variable that has to hold that estimate in amanda?