K3B CD's on Windows

I have a problem with CD/DVD’s burned with K3B in openSUSE 11.2.
They are not readable on computers with Windows.
When I was burning them I had UNIX+Windows filesystem selected.
Any ideas?

What was on them?

I haven’t had that problem - having recently copied stuff from Linux to Windows with the Linux+Windows setting but you could try UDF and see if that works.

photos only, I have tried UDF too but didn’t help :\

Absolutely never had any issue here myself.
Are we talking -r or /rw

CD and DVD -R

Then I really can’t say.
It seems more likely to be a problem with your windows installation if you ask me. Have a friend look at one - see if they can read your disks.