Eclipse Helios x86 issues on Windows 7 x64, even on clean system

I have a problem with Eclipse for some time. When I move to Windows 7 x64 on my notebook, Eclipse starts getting "Freeze", for example, when using Content Assist (Code Helper), or using any other option in Eclipse. I am using quite bunch of plugins, so, I tried to delete them all, and check clean IDE. But this didn't help. I downloaded fresh Eclipse Helios for Windows x64, didn't help. I even formated the disk, reinstall Windows, install only 开发者_运维问答JDK and Eclipse but it always occur. What can I do ?

Edit:

Memory: I did not change memory, and IDE freeze, change memory to 512,1024,2048 MB, keeps freezing. (via vm parameters).

Anti-Virus: I am using ESET Smart Security, but with our without it, Eclipse keeps freezing.

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After much frustration, I disabled AVG and it worked fine.

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Several leads.

1. Check whether this freeze the freeze is linked to a huge consumption of CPU or disk usage. Unlikely.

2. If not then this is probably a network issue. Then disable the firewall for a while and try again. Eclipse now reports your plugin usage at the beginning of a session and it might be busy looking for a connection.

3. Close all editors from previous session. In the past, eclipse tried to access xml DTD with from the network instead of the local catalog and that would fail if you were offline of course.

Finally, let me tell you that if this is for running eclipse you've selected the worst OS. OSX and Linux are much better options. I used to do so as well. But for the last two years, I've run Windows only inside VirtualBox when I couldn't avoid it (TOAD, Macromedia Fireworks) and I wished I had migrated before.

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The crucial point is how much memory you have for Eclipse and if you have any anti-virus software installed that needs to preparse all the class files Eclipse wants to look in.

Does it settle after some usage?