BUG in " == " ? (PR#9065)

Hello,
here is the version of R that I use :

version

_
platform       i486-pc-linux-gnu
arch           i486
os             linux-gnu
system         i486, linux-gnu
status
major          2
minor          3.1
year           2006
month          06
day            01
svn rev        38247
language       R
version.string Version 2.3.1 (2006-06-01)

And here is one of the sequences of isntruction that returns an abberation :

x<-seq(0,1,by=0.01)
x[71]

[1] 0.7

which(x == 0.7)

numeric(0)

x[71] == 0.7

[1] FALSE

Or another version of (maybe) the same bug :

x <- 70
x == 70

[1] TRUE

x <- x*0
x <- 70
x == 70

[1] TRUE

x<-x*0.01
x

[1] 0.7

x == 0.7

[1] FALSE

It seems completely strange ... any help would be greatly appreciated :)

Regards,
Eric Durand