please help! still having probs - nero 6

I loaded the nero powerpack cd (with Nero 6 on it) onto my computer about a week ago and have had lots of problems with my computer trying to get it to work. I saw there was an update to 6.3.0.0. on the nero site so I loaded that, but it still hasn't helped. Here are a list of the problems:-
1. When you are trying to open Nero Smartstart - it can take up to 5 minutes till it opens!! sometimes, it wont open at all!!
2. when trying to burn an audio cd - it does do it, but doesn't end it properly, so the only way you can get the cd out again is to abort it. This leads to the CD drive not opening and having to reboot the computer again to get it working.
3 When trying to do a dvd-video disc, it aborts itself after 2-4%. after this, even Internet explorer wont open on the desktop and you have to reboot it again.

Any help or suggestions would be great!!!

 

what is youer system specs. it sounds like you do not have enough ram

 

I have an Athlon 2100 processor; 512MB ram; use windows XP - everything had been fine until I upgraded to Nero 6 powerpack. I look forward to your suggestions