F6 input issue - just me?

Anyone else having this issue?

Use any operator in edit mode: example “loop cut”, then use f6 to bring up the perimeters of the operation.

Problem, I cannot input changes to the available values.

version 2.63 (sub 17), revision b’49436’. b’Release’
build date: b’2012-07-31’, b’19:44:41’
platform: b’Linux’

Edit: I take that back, its only happening after a loop cut. - Still ??