Dear Support! I use the lastest version of Thunderbird and i got a very strange problem. I never had this problem before. I have 3 different email (all POP3) and all of this do the same. Everytime when i write an email to anybody and i attach anything (like pdf, or docx) the program needs to 3-4 sec to get ready attach (all of the 3 account has this problem). The attachment size not non-influential, because 200kb and 12MB are needs the same time. I deleted the history, cookies, everything. The PC is very good, i5-10500 / 8GB DDR4 / 256GB NVMe SSD / Windows 11. I tried to disable the virus protection (ESET NOD Internet Security), but did not bring improvement. Do you have any suggestion for the repair? Thank you in advance. Gergely Záray zaraygergely@gmail.com