postscript rotation (bug?)

hello,

when making postscript images with postscript() and converting them to
pdf with epstopdf, some images are rotated 90 degrees clockwise. The
postscript displays fine (ggv).

It seems to be related with length(xlab)/length(ylab), e.g:

postscript("wrong.ps", width=5, height=5, horizontal=F, onefile=F,

paper = "special")

plot(1, 1, xlab="short", ylab="abitlonger")
dev.off()

If then converted to pdf with epstopf, then wrong.pdf is rotated

However,

postscript("OK.ps", width=5, height=5, horizontal=F, onefile=F, paper =

"special")

plot(1, 1, xlab="equal", ylab="equal")
dev.off()

en then converted to OK.pdf displays OK.

Setting horizontal=T does not change anything for the final pdf file.
(The .ps is rotated -90 degrees however).

Is anyone able to reproduce this problem? I am using fedora core 3.