lucy24 - 1:39 am on Jan 9, 2013 (gmt 0)

Hey, totally reasonable question. I used to have a line that said:
BrowserMatch "MSIE [1-4]" keep_out

Can you spot the problem? :) After one unintended lockout I hastily changed it to

"MSIE [1-4]\."

with trailing period. I've got some further bits in mod_rewrite that address MSIE 5 and 6. (Mac over 5.2: unequivocal robot. Otherwise, look more closely at circumstances.)

You could say (\d\d|[6-9])\. and then you'd be covered forever. Or at least for a longish time.