Never had any issue with boot camp, as long as partitions are correctly assigned Startup disk manages it well.
Not put Leopard on yet as that machine was boxed up and i only got it back out again after 6 months last month, had no use for it at the time and not got round to doing it yet. The other iMac is still running tiger because the radio station software I use does not work correctly on Leopard and due to fact it runs 24/7 gotta find time to down the machine, transfer all the software and music library and get the other imac (or ibook) to take over while I do..... i am lazy lol
Dont know if you have visited this site yet...
www.macosg.com..... some really good stuff on there... its the Mac Owners Support Group, good reviews and help too!