Hi guys. I've been running 4.2rc1 for while (will upgrade to 4.2 Std when I get my broadband connection this weekend 😊 ) and UI-PHG works well with UIV32. Running on Fedora Core 3 btw.
I did notice that the tooltip balloons didn't work until I changed video drivers for my ATI Radeon 9200SE dual-head card from the standard X.org drivers shipped with the distro to the ATI proprietary drivers. The bottom of the object windows are still slightly cut off on my system and, as already noted in issues, help still doesn't work.
I've also noted problems loading very large maps under Linux since upgrading to Core 3 and 4.x whereas they used to load under 3.x and still work fine under WinXP. I'm talking about maps >8MB here. I have a couple of hi-res, large area .png maps that I like to use but can't currently load. I'll try again after upgrading and let the group know.