Deleting charts causes MT4 to hang..Vista

I know this is not a programming topic but since most of the techheads are in this forum...

When deleting charts MT4 will hang and I have to use the Task Manager to stop MT4. I'm running Vista Home Premium 64bit. Newer desktop plenty of RAM etc....

Any suggs???

I have a less powerful but similar system and never experienced problems like this.

Yeah the ONLY reason I have a windows machine is because there no dedicated Mac version of MT4....

Not sure why this is happening....