Safari is crashing repeatedly...

Since I installed Mountain Lion(clean install), I'm having problems with Safari 6...

When I click with two fingers to open the menu... IS CRASHING!

Here is an important part of logs...

28/08/12 16:55:47,752 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:03:39,296 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:18:06,983 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:18:45,035 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:25:34,787 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:46:01,050 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 17:48:50,434 Safari[311]: CGContextClipToRect: invalid context 0x0

28/08/12 19:22:40,654 Safari[285]: CGContextClipToRect: invalid context 0x0

28/08/12 19:22:46,776 Safari[285]: CGContextClipToRect: invalid context 0x0

28/08/12 19:22:58,200 Safari[285]: Received an invalid message from the web process with message ID 323002f

28/08/12 19:24:07,259 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:24:12,259 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:24:55,186 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:25:47,775 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:26:18,321 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:26:36,959 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:26:39,321 Safari[315]: CGContextClipToRect: invalid context 0x0

28/08/12 19:30:10,722 Safari[315]: CGContextClipToRect: invalid context 0x0

Someone can help me?

Thanks!